diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java
index 6e50c965759..b4ea6c0cefd 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java
@@ -109,7 +109,7 @@ public abstract class NumberFieldMapper<T extends Number> extends AbstractFieldM
                                 Field.Index index, Field.Store store,
                                 float boost, boolean omitNorms, boolean omitTermFreqAndPositions,
                                 NamedAnalyzer indexAnalyzer, NamedAnalyzer searchAnalyzer) {
-        super(names, index, store, Field.TermVector.NO, boost, omitNorms, omitTermFreqAndPositions, indexAnalyzer, searchAnalyzer);
+        super(names, index, store, Field.TermVector.NO, boost, boost != 1.0f || omitNorms, omitTermFreqAndPositions, indexAnalyzer, searchAnalyzer);
         if (precisionStep <= 0 || precisionStep >= maxPrecisionStep()) {
             this.precisionStep = Integer.MAX_VALUE;
         } else {