diff --git a/core/src/main/java/org/elasticsearch/indices/cluster/IndicesClusterStateService.java b/core/src/main/java/org/elasticsearch/indices/cluster/IndicesClusterStateService.java
index 49068eec002..6052d109565 100644
--- a/core/src/main/java/org/elasticsearch/indices/cluster/IndicesClusterStateService.java
+++ b/core/src/main/java/org/elasticsearch/indices/cluster/IndicesClusterStateService.java
@@ -73,7 +73,6 @@ import org.elasticsearch.snapshots.RestoreService;
 import org.elasticsearch.threadpool.ThreadPool;
 
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;