diff --git a/jdk/test/java/util/prefs/CodePointZeroPrefsTest.java b/jdk/test/java/util/prefs/CodePointZeroPrefsTest.java
index 79fe3f3fb87..661039092c5 100644
--- a/jdk/test/java/util/prefs/CodePointZeroPrefsTest.java
+++ b/jdk/test/java/util/prefs/CodePointZeroPrefsTest.java
@@ -28,6 +28,7 @@ import java.util.prefs.PreferencesFactory;
  * @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
 {