diff --git a/gson/src/test/java/com/google/gson/functional/MapTest.java b/gson/src/test/java/com/google/gson/functional/MapTest.java
index 723684f6..10b9a9b5 100755
--- a/gson/src/test/java/com/google/gson/functional/MapTest.java
+++ b/gson/src/test/java/com/google/gson/functional/MapTest.java
@@ -450,6 +450,7 @@ public class MapTest extends TestCase {
     }
   }
 
+  @SuppressWarnings("unchecked")
   static final class MapWithGeneralMapParameters {
     final Map<String, Object> map = new LinkedHashMap();
   }