diff --git a/test/jdk/java/awt/dnd/NotReallySerializableTest/NotReallySerializableTest.java b/test/jdk/java/awt/dnd/NotReallySerializableTest/NotReallySerializableTest.java
index 84fd2dfd4f02e..1c80f479eefd5 100644
--- a/test/jdk/java/awt/dnd/NotReallySerializableTest/NotReallySerializableTest.java
+++ b/test/jdk/java/awt/dnd/NotReallySerializableTest/NotReallySerializableTest.java
@@ -23,6 +23,7 @@
 
 /*
   @test
+  @key headful
   @bug 4187912
   @summary Test that some incorrectly written DnD code cannot hang the app
   @run main NotReallySerializableTest
@@ -116,4 +117,4 @@ class TrickDropTargetListener extends DropTargetAdapter
     Object trick = new Object();
 
     public void drop(DropTargetDropEvent dtde) {}
-}
\ No newline at end of file
+}