diff --git a/src/main/java/org/tikv/common/util/ClientUtils.java b/src/main/java/org/tikv/common/util/ClientUtils.java
index 2836ea0126e..e85babf608b 100644
--- a/src/main/java/org/tikv/common/util/ClientUtils.java
+++ b/src/main/java/org/tikv/common/util/ClientUtils.java
@@ -121,7 +121,7 @@ public static Map<TiRegion, List<ByteString>> groupKeysByRegion(
 
   public static Map<TiRegion, List<ByteString>> groupKeysByRegion(
       RegionManager regionManager, List<ByteString> keys, BackOffer backoffer) {
-    return groupKeysByRegion(regionManager, new ArrayList<>(keys), backoffer, false);
+    return groupKeysByRegion(regionManager, keys, backoffer, false);
   }
 
   /**