diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/engine/robin/RobinEngine.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/engine/robin/RobinEngine.java
index 43b46cb5615..8c619838868 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/engine/robin/RobinEngine.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/engine/robin/RobinEngine.java
@@ -109,10 +109,10 @@ public class RobinEngine extends AbstractIndexShardComponent implements Engine,
         Preconditions.checkNotNull(deletionPolicy, "Snapshot deletion policy must be provided to the engine");
         Preconditions.checkNotNull(translog, "Translog must be provided to the engine");
 
-        this.indexingBufferSize = componentSettings.getAsBytesSize("indexing_buffer_size", new ByteSizeValue(64, ByteSizeUnit.MB));
+        this.indexingBufferSize = componentSettings.getAsBytesSize("index_buffer_size", new ByteSizeValue(64, ByteSizeUnit.MB)); // not really important, as it is set by the IndexingMemory manager
         this.termIndexInterval = indexSettings.getAsInt("index.term_index_interval", IndexWriter.DEFAULT_TERM_INDEX_INTERVAL);
         this.compoundFormat = indexSettings.getAsBoolean("index.compound_format", indexSettings.getAsBoolean("index.merge.policy.use_compound_file", store == null ? false : store.suggestUseCompoundFile()));
-        this.refreshInterval = componentSettings.getAsTime("refresh_interval", timeValueSeconds(1));
+        this.refreshInterval = componentSettings.getAsTime("refresh_interval", indexSettings.getAsTime("index.refresh_interval", timeValueSeconds(1)));
 
         this.store = store;
         this.deletionPolicy = deletionPolicy;