diff --git a/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequest.java b/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequest.java
index 1f6bf871101..0090d7db057 100644
--- a/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequest.java
+++ b/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequest.java
@@ -30,7 +30,7 @@ import org.elasticsearch.common.xcontent.XContentFactory;
 import org.elasticsearch.common.xcontent.XContentType;
 
 import java.io.IOException;
-import java.util.*;
+import java.util.Map;
 
 import static org.elasticsearch.action.ValidateActions.addValidationError;
 import static org.elasticsearch.common.settings.Settings.Builder.EMPTY_SETTINGS;
diff --git a/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequestBuilder.java b/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequestBuilder.java
index 39ab0adc72f..f0492edfeb1 100644
--- a/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequestBuilder.java
+++ b/core/src/main/java/org/elasticsearch/action/admin/cluster/settings/ClusterUpdateSettingsRequestBuilder.java
@@ -23,8 +23,6 @@ import org.elasticsearch.action.support.master.AcknowledgedRequestBuilder;
 import org.elasticsearch.client.ElasticsearchClient;
 import org.elasticsearch.common.settings.Settings;
 
-import java.util.Arrays;
-import java.util.Collection;
 import java.util.Map;
 
 /**