diff --git a/libs/core/src/main/java/org/opensearch/core/common/util/CollectionUtils.java b/libs/core/src/main/java/org/opensearch/core/common/util/CollectionUtils.java
index 5cb8b900814b9..e8dd31fcf1869 100644
--- a/libs/core/src/main/java/org/opensearch/core/common/util/CollectionUtils.java
+++ b/libs/core/src/main/java/org/opensearch/core/common/util/CollectionUtils.java
@@ -134,6 +134,7 @@ public static void ensureNoSelfReferences(Object value, String messageHint) {
         }
     }
 
+    @SuppressWarnings("unchecked")
     private static Iterable<?> convert(Object value) {
         if (value == null) {
             return null;