diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/cache/field/data/support/AbstractConcurrentMapFieldDataCache.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/cache/field/data/support/AbstractConcurrentMapFieldDataCache.java
index c82ffc49609..f6c1262f05c 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/cache/field/data/support/AbstractConcurrentMapFieldDataCache.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/cache/field/data/support/AbstractConcurrentMapFieldDataCache.java
@@ -81,7 +81,7 @@ public abstract class AbstractConcurrentMapFieldDataCache extends AbstractIndexC
                 }
             }
         }
-        FieldData fieldData = (FieldData) fieldDataCache.get(fieldName);
+        FieldData fieldData = fieldDataCache.get(fieldName);
         if (fieldData == null) {
             synchronized (fieldDataCache) {
                 fieldData = fieldDataCache.get(fieldName);