diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonBooleanFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonBooleanFieldMapper.java
index 0528f830e52..9be1a3ef8da 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonBooleanFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonBooleanFieldMapper.java
@@ -26,6 +26,7 @@ import org.codehaus.jackson.JsonToken;
 import org.codehaus.jackson.node.ObjectNode;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.util.Booleans;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.json.JsonBuilder;
 import org.elasticsearch.util.lucene.Lucene;
 
@@ -102,9 +103,9 @@ public class JsonBooleanFieldMapper extends JsonFieldMapper<Boolean> {
             parseJsonField(builder, name, booleanNode, parserContext);
             for (Iterator<Map.Entry<String, JsonNode>> propsIt = booleanNode.getFields(); propsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = propsIt.next();
-                String propName = entry.getKey();
+                String propName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode propNode = entry.getValue();
-                if (propName.equals("nullValue") || propName.equals("null_value")) {
+                if (propName.equals("null_value")) {
                     builder.nullValue(nodeBooleanValue(propNode));
                 }
             }
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDateFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDateFieldMapper.java
index aefb57d3349..250e63a8123 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDateFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDateFieldMapper.java
@@ -30,6 +30,7 @@ import org.elasticsearch.index.analysis.NamedAnalyzer;
 import org.elasticsearch.index.analysis.NumericDateAnalyzer;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.util.Numbers;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.joda.FormatDateTimeFormatter;
 import org.elasticsearch.util.joda.Joda;
 import org.elasticsearch.util.json.JsonBuilder;
@@ -90,9 +91,9 @@ public class JsonDateFieldMapper extends JsonNumberFieldMapper<Long> {
             parseNumberField(builder, name, dateNode, parserContext);
             for (Iterator<Map.Entry<String, JsonNode>> propsIt = dateNode.getFields(); propsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = propsIt.next();
-                String propName = entry.getKey();
+                String propName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode propNode = entry.getValue();
-                if (propName.equals("nullValue") || propName.equals("null_value")) {
+                if (propName.equals("null_value")) {
                     builder.nullValue(propNode.getValueAsText());
                 } else if (propName.equals("format")) {
                     builder.dateTimeFormatter(parseDateTimeFormatter(propName, propNode));
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDocumentMapperParser.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDocumentMapperParser.java
index 3086175ccf1..dd815e842c6 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDocumentMapperParser.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonDocumentMapperParser.java
@@ -28,6 +28,7 @@ import org.elasticsearch.index.mapper.DocumentMapper;
 import org.elasticsearch.index.mapper.DocumentMapperParser;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.util.MapBuilder;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.io.FastStringReader;
 import org.elasticsearch.util.json.Jackson;
 
@@ -117,7 +118,7 @@ public class JsonDocumentMapperParser implements DocumentMapperParser {
 
         for (Iterator<Map.Entry<String, JsonNode>> fieldsIt = rootObj.getFields(); fieldsIt.hasNext();) {
             Map.Entry<String, JsonNode> entry = fieldsIt.next();
-            String fieldName = entry.getKey();
+            String fieldName = Strings.toUnderscoreCase(entry.getKey());
             JsonNode fieldNode = entry.getValue();
 
             if (JsonSourceFieldMapper.JSON_TYPE.equals(fieldName) || "sourceField".equals(fieldName)) {
@@ -178,7 +179,7 @@ public class JsonDocumentMapperParser implements DocumentMapperParser {
         parseNumberField(builder, name, boostNode, parserContext);
         for (Iterator<Map.Entry<String, JsonNode>> propsIt = boostNode.getFields(); propsIt.hasNext();) {
             Map.Entry<String, JsonNode> entry = propsIt.next();
-            String propName = entry.getKey();
+            String propName = Strings.toUnderscoreCase(entry.getKey());
             JsonNode propNode = entry.getValue();
             if (propName.equals("null_value")) {
                 builder.nullValue(nodeFloatValue(propNode));
@@ -208,7 +209,7 @@ public class JsonDocumentMapperParser implements DocumentMapperParser {
         parseJsonField(builder, builder.name, allNode, parserContext);
         for (Iterator<Map.Entry<String, JsonNode>> fieldsIt = allNode.getFields(); fieldsIt.hasNext();) {
             Map.Entry<String, JsonNode> entry = fieldsIt.next();
-            String fieldName = entry.getKey();
+            String fieldName = Strings.toUnderscoreCase(entry.getKey());
             JsonNode fieldNode = entry.getValue();
             if (fieldName.equals("enabled")) {
                 builder.enabled(nodeBooleanValue(fieldNode));
@@ -222,7 +223,7 @@ public class JsonDocumentMapperParser implements DocumentMapperParser {
         JsonSourceFieldMapper.Builder builder = source();
         for (Iterator<Map.Entry<String, JsonNode>> fieldsIt = sourceNode.getFields(); fieldsIt.hasNext();) {
             Map.Entry<String, JsonNode> entry = fieldsIt.next();
-            String fieldName = entry.getKey();
+            String fieldName = Strings.toUnderscoreCase(entry.getKey());
             JsonNode fieldNode = entry.getValue();
             if (fieldName.equals("enabled")) {
                 builder.enabled(nodeBooleanValue(fieldNode));
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonFloatFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonFloatFieldMapper.java
index 67ae4efa713..fa6810c23d1 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonFloatFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonFloatFieldMapper.java
@@ -30,6 +30,7 @@ import org.elasticsearch.index.analysis.NamedAnalyzer;
 import org.elasticsearch.index.analysis.NumericFloatAnalyzer;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.util.Numbers;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.json.JsonBuilder;
 
 import java.io.IOException;
@@ -80,9 +81,9 @@ public class JsonFloatFieldMapper extends JsonNumberFieldMapper<Float> {
             parseNumberField(builder, name, floatNode, parserContext);
             for (Iterator<Map.Entry<String, JsonNode>> propsIt = floatNode.getFields(); propsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = propsIt.next();
-                String propName = entry.getKey();
+                String propName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode propNode = entry.getValue();
-                if (propName.equals("nullValue") || propName.equals("null_value")) {
+                if (propName.equals("null_value")) {
                     builder.nullValue(nodeFloatValue(propNode));
                 }
             }
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonIntegerFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonIntegerFieldMapper.java
index b874b446a51..9f8d9b1e697 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonIntegerFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonIntegerFieldMapper.java
@@ -30,6 +30,7 @@ import org.elasticsearch.index.analysis.NamedAnalyzer;
 import org.elasticsearch.index.analysis.NumericIntegerAnalyzer;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.util.Numbers;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.json.JsonBuilder;
 
 import java.io.IOException;
@@ -80,9 +81,9 @@ public class JsonIntegerFieldMapper extends JsonNumberFieldMapper<Integer> {
             parseNumberField(builder, name, integerNode, parserContext);
             for (Iterator<Map.Entry<String, JsonNode>> propsIt = integerNode.getFields(); propsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = propsIt.next();
-                String propName = entry.getKey();
+                String propName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode propNode = entry.getValue();
-                if (propName.equals("nullValue")) {
+                if (propName.equals("null_value")) {
                     builder.nullValue(nodeIntegerValue(propNode));
                 }
             }
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonLongFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonLongFieldMapper.java
index abb894880b7..35a003f0533 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonLongFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonLongFieldMapper.java
@@ -30,6 +30,7 @@ import org.elasticsearch.index.analysis.NamedAnalyzer;
 import org.elasticsearch.index.analysis.NumericLongAnalyzer;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.util.Numbers;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.json.JsonBuilder;
 
 import java.io.IOException;
@@ -80,9 +81,9 @@ public class JsonLongFieldMapper extends JsonNumberFieldMapper<Long> {
             parseNumberField(builder, name, longNode, parserContext);
             for (Iterator<Map.Entry<String, JsonNode>> propsIt = longNode.getFields(); propsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = propsIt.next();
-                String propName = entry.getKey();
+                String propName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode propNode = entry.getValue();
-                if (propName.equals("nullValue")) {
+                if (propName.equals("null_value")) {
                     builder.nullValue(nodeLongValue(propNode));
                 }
             }
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonMultiFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonMultiFieldMapper.java
index c37567ea032..ca55a801afb 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonMultiFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonMultiFieldMapper.java
@@ -26,6 +26,7 @@ import org.elasticsearch.index.mapper.FieldMapper;
 import org.elasticsearch.index.mapper.FieldMapperListener;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.index.mapper.MergeMappingException;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.json.JsonBuilder;
 
 import java.io.IOException;
@@ -106,7 +107,7 @@ public class JsonMultiFieldMapper implements JsonMapper, JsonIncludeInAllMapper
             JsonMultiFieldMapper.Builder builder = multiField(name);
             for (Iterator<Map.Entry<String, JsonNode>> fieldsIt = multiFieldNode.getFields(); fieldsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = fieldsIt.next();
-                String fieldName = entry.getKey();
+                String fieldName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode fieldNode = entry.getValue();
                 if (fieldName.equals("path")) {
                     builder.pathType(parsePathType(name, fieldNode.getValueAsText()));
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonObjectMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonObjectMapper.java
index 9766aa945c4..ee371dbda91 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonObjectMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonObjectMapper.java
@@ -27,6 +27,7 @@ import org.codehaus.jackson.node.ArrayNode;
 import org.codehaus.jackson.node.ObjectNode;
 import org.elasticsearch.ElasticSearchIllegalStateException;
 import org.elasticsearch.index.mapper.*;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.concurrent.ThreadSafe;
 import org.elasticsearch.util.joda.FormatDateTimeFormatter;
 import org.elasticsearch.util.json.JsonBuilder;
@@ -160,7 +161,7 @@ public class JsonObjectMapper implements JsonMapper, JsonIncludeInAllMapper {
             JsonObjectMapper.Builder builder = object(name);
             for (Iterator<Entry<String, JsonNode>> fieldsIt = objectNode.getFields(); fieldsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = fieldsIt.next();
-                String fieldName = entry.getKey();
+                String fieldName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode fieldNode = entry.getValue();
                 if (fieldName.equals("dynamic")) {
                     builder.dynamic(nodeBooleanValue(fieldNode));
@@ -169,7 +170,7 @@ public class JsonObjectMapper implements JsonMapper, JsonIncludeInAllMapper {
                     if (!type.equals("object")) {
                         throw new MapperParsingException("Trying to parse an object but has a different type [" + type + "] for [" + name + "]");
                     }
-                } else if (fieldName.equals("dateFormats") || fieldName.equals("date_formats")) {
+                } else if (fieldName.equals("date_formats")) {
                     List<FormatDateTimeFormatter> dateTimeFormatters = newArrayList();
                     if (fieldNode.isArray()) {
                         for (JsonNode node1 : (ArrayNode) fieldNode) {
@@ -191,7 +192,7 @@ public class JsonObjectMapper implements JsonMapper, JsonIncludeInAllMapper {
                     builder.pathType(parsePathType(name, fieldNode.getValueAsText()));
                 } else if (fieldName.equals("properties")) {
                     parseProperties(builder, (ObjectNode) fieldNode, parserContext);
-                } else if (fieldName.equals("includeInAll") || fieldName.equals("include_in_all")) {
+                } else if (fieldName.equals("include_in_all")) {
                     builder.includeInAll(nodeBooleanValue(fieldNode));
                 }
             }
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonShortFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonShortFieldMapper.java
index 16f4e2639f2..65739457557 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonShortFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonShortFieldMapper.java
@@ -30,6 +30,7 @@ import org.elasticsearch.index.analysis.NamedAnalyzer;
 import org.elasticsearch.index.analysis.NumericIntegerAnalyzer;
 import org.elasticsearch.index.mapper.MapperParsingException;
 import org.elasticsearch.util.Numbers;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.json.JsonBuilder;
 
 import java.io.IOException;
@@ -80,9 +81,9 @@ public class JsonShortFieldMapper extends JsonNumberFieldMapper<Short> {
             parseNumberField(builder, name, shortNode, parserContext);
             for (Iterator<Map.Entry<String, JsonNode>> propsIt = shortNode.getFields(); propsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = propsIt.next();
-                String propName = entry.getKey();
+                String propName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode propNode = entry.getValue();
-                if (propName.equals("nullValue") || propName.equals("null_value")) {
+                if (propName.equals("null_value")) {
                     builder.nullValue(nodeShortValue(propNode));
                 }
             }
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonStringFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonStringFieldMapper.java
index 472e420a37e..22f3323e495 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonStringFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonStringFieldMapper.java
@@ -26,6 +26,7 @@ import org.codehaus.jackson.JsonToken;
 import org.codehaus.jackson.node.ObjectNode;
 import org.elasticsearch.index.analysis.NamedAnalyzer;
 import org.elasticsearch.index.mapper.MapperParsingException;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.json.JsonBuilder;
 
 import java.io.IOException;
@@ -82,9 +83,9 @@ public class JsonStringFieldMapper extends JsonFieldMapper<String> implements Js
             parseJsonField(builder, name, stringNode, parserContext);
             for (Iterator<Map.Entry<String, JsonNode>> propsIt = stringNode.getFields(); propsIt.hasNext();) {
                 Map.Entry<String, JsonNode> entry = propsIt.next();
-                String propName = entry.getKey();
+                String propName = Strings.toUnderscoreCase(entry.getKey());
                 JsonNode propNode = entry.getValue();
-                if (propName.equals("nullValue")) {
+                if (propName.equals("null_value")) {
                     builder.nullValue(propNode.getValueAsText());
                 }
             }
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParser.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParser.java
index f506168ae31..e46d7e01a5e 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParser.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParser.java
@@ -24,6 +24,7 @@ import org.codehaus.jackson.JsonNode;
 import org.codehaus.jackson.node.ObjectNode;
 import org.elasticsearch.index.analysis.AnalysisService;
 import org.elasticsearch.index.mapper.MapperParsingException;
+import org.elasticsearch.util.Strings;
 
 /**
  * @author kimchy (shay.banon)
@@ -53,7 +54,7 @@ public interface JsonTypeParser {
         }
 
         public JsonTypeParser typeParser(String type) {
-            return typeParsers.get(type);
+            return typeParsers.get(Strings.toUnderscoreCase(type));
         }
     }
 
diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParsers.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParsers.java
index 5e66fcd5064..8ff7f89b590 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParsers.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/json/JsonTypeParsers.java
@@ -23,6 +23,7 @@ import org.apache.lucene.document.Field;
 import org.codehaus.jackson.JsonNode;
 import org.codehaus.jackson.node.ObjectNode;
 import org.elasticsearch.index.mapper.MapperParsingException;
+import org.elasticsearch.util.Strings;
 import org.elasticsearch.util.joda.FormatDateTimeFormatter;
 import org.elasticsearch.util.joda.Joda;
 
@@ -40,9 +41,9 @@ public class JsonTypeParsers {
         parseJsonField(builder, name, numberNode, parserContext);
         for (Iterator<Map.Entry<String, JsonNode>> propsIt = numberNode.getFields(); propsIt.hasNext();) {
             Map.Entry<String, JsonNode> entry = propsIt.next();
-            String propName = entry.getKey();
+            String propName = Strings.toUnderscoreCase(entry.getKey());
             JsonNode propNode = entry.getValue();
-            if (propName.equals("precisionStep") || propName.equals("precision_step")) {
+            if (propName.equals("precision_step")) {
                 builder.precisionStep(nodeIntegerValue(propNode));
             }
         }
@@ -51,30 +52,30 @@ public class JsonTypeParsers {
     public static void parseJsonField(JsonFieldMapper.Builder builder, String name, ObjectNode fieldNode, JsonTypeParser.ParserContext parserContext) {
         for (Iterator<Map.Entry<String, JsonNode>> propsIt = fieldNode.getFields(); propsIt.hasNext();) {
             Map.Entry<String, JsonNode> entry = propsIt.next();
-            String propName = entry.getKey();
+            String propName = Strings.toUnderscoreCase(entry.getKey());
             JsonNode propNode = entry.getValue();
-            if (propName.equals("indexName") || propName.equals("index_name")) {
+            if (propName.equals("index_name")) {
                 builder.indexName(propNode.getTextValue());
             } else if (propName.equals("store")) {
                 builder.store(parseStore(name, propNode.getTextValue()));
             } else if (propName.equals("index")) {
                 builder.index(parseIndex(name, propNode.getTextValue()));
-            } else if (propName.equals("termVector") || propName.equals("term_vector")) {
+            } else if (propName.equals("term_vector")) {
                 builder.termVector(parseTermVector(name, propNode.getTextValue()));
             } else if (propName.equals("boost")) {
                 builder.boost(nodeFloatValue(propNode));
-            } else if (propName.equals("omitNorms") || propName.equals("omit_norms")) {
+            } else if (propName.equals("omit_norms")) {
                 builder.omitNorms(nodeBooleanValue(propNode));
-            } else if (propName.equals("omitTermFreqAndPositions") || propName.equals("omit_term_freq_and_positions")) {
+            } else if (propName.equals("omit_term_freq_and_positions")) {
                 builder.omitTermFreqAndPositions(nodeBooleanValue(propNode));
-            } else if (propName.equals("indexAnalyzer") || propName.equals("index_analyzer")) {
+            } else if (propName.equals("index_analyzer")) {
                 builder.indexAnalyzer(parserContext.analysisService().analyzer(propNode.getTextValue()));
-            } else if (propName.equals("searchAnalyzer") || propName.equals("search_analyzer")) {
+            } else if (propName.equals("search_analyzer")) {
                 builder.searchAnalyzer(parserContext.analysisService().analyzer(propNode.getTextValue()));
             } else if (propName.equals("analyzer")) {
                 builder.indexAnalyzer(parserContext.analysisService().analyzer(propNode.getTextValue()));
                 builder.searchAnalyzer(parserContext.analysisService().analyzer(propNode.getTextValue()));
-            } else if (propName.equals("includeInAll") || propName.equals("include_in_all")) {
+            } else if (propName.equals("include_in_all")) {
                 builder.includeInAll(nodeBooleanValue(propNode));
             }
         }
@@ -90,6 +91,7 @@ public class JsonTypeParsers {
     }
 
     public static Field.TermVector parseTermVector(String fieldName, String termVector) throws MapperParsingException {
+        termVector = Strings.toUnderscoreCase(termVector);
         if ("no".equals(termVector)) {
             return Field.TermVector.NO;
         } else if ("yes".equals(termVector)) {
@@ -106,6 +108,7 @@ public class JsonTypeParsers {
     }
 
     public static Field.Index parseIndex(String fieldName, String index) throws MapperParsingException {
+        index = Strings.toUnderscoreCase(index);
         if ("no".equals(index)) {
             return Field.Index.NO;
         } else if ("not_analyzed".equals(index)) {
@@ -128,7 +131,8 @@ public class JsonTypeParsers {
     }
 
     public static JsonPath.Type parsePathType(String name, String path) throws MapperParsingException {
-        if ("justName".equals(path) || "just_name".equals(path)) {
+        path = Strings.toUnderscoreCase(path);
+        if ("just_name".equals(path)) {
             return JsonPath.Type.JUST_NAME;
         } else if ("full".equals(path)) {
             return JsonPath.Type.FULL;