--- a/jdk/test/java/awt/Window/WindowDeadlockTest/WindowDeadlockTest.java	Tue Jul 04 13:37:02 2017 +0530
+++ b/jdk/test/java/awt/Window/WindowDeadlockTest/WindowDeadlockTest.java	Fri Jun 30 16:32:18 2017 +0200
@@ -23,6 +23,7 @@
 
 /*
  * @test
+ * @key headful
  * @bug 8176490
  * @summary Tests that there is no hang or deadlock when the visibility
  *      of parent and child windows is changed.