diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/CustomScoreQueryParser.java b/modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/CustomScoreQueryParser.java
index 682ea73b3d3..0402cb5a16d 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/CustomScoreQueryParser.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/CustomScoreQueryParser.java
@@ -117,7 +117,6 @@ public class CustomScoreQueryParser extends AbstractIndexComponent implements XC
         }
 
         @Override public float score(int docId, float subQueryScore) {
-            vars.put("score", subQueryScore);
             vars.put("_score", subQueryScore);
             return ((Number) script.execute(docId, vars)).floatValue();
         }