diff --git a/modules/lang-groovy/src/main/java/org/elasticsearch/script/groovy/GroovyScriptEngineService.java b/modules/lang-groovy/src/main/java/org/elasticsearch/script/groovy/GroovyScriptEngineService.java
index 1331ec99e5f..7f390ade088 100644
--- a/modules/lang-groovy/src/main/java/org/elasticsearch/script/groovy/GroovyScriptEngineService.java
+++ b/modules/lang-groovy/src/main/java/org/elasticsearch/script/groovy/GroovyScriptEngineService.java
@@ -71,7 +71,6 @@ import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.concurrent.atomic.AtomicBoolean;
 
 import static java.util.Collections.emptyList;