--- a/jdk/test/java/util/prefs/CodePointZeroPrefsTest.java	Wed Jul 05 20:38:50 2017 +0200
+++ b/jdk/test/java/util/prefs/CodePointZeroPrefsTest.java	Thu Jun 18 17:20:42 2015 -0700
@@ -28,6 +28,7 @@
  * @test
  * @bug 8068373 8075110 8075156
  * @summary Ensure a code point U+0000 null control character is detected.
+ * @run main/othervm -Djava.util.prefs.userRoot=. CodePointZeroPrefsTest
  */
 public class CodePointZeroPrefsTest
 {