diff --git a/server/src/test/java/org/elasticsearch/common/settings/KeyStoreWrapperTests.java b/server/src/test/java/org/elasticsearch/common/settings/KeyStoreWrapperTests.java
index fb1c10f32b8..68f434b1796 100644
--- a/server/src/test/java/org/elasticsearch/common/settings/KeyStoreWrapperTests.java
+++ b/server/src/test/java/org/elasticsearch/common/settings/KeyStoreWrapperTests.java
@@ -55,7 +55,6 @@ import java.security.SecureRandom;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Base64;
-import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;