diff --git a/test/hotspot/jtreg/runtime/PrintingTests/StringPrinting.java b/test/hotspot/jtreg/runtime/PrintingTests/StringPrinting.java
index fffcdd72d1584..f55a8308e6d38 100644
--- a/test/hotspot/jtreg/runtime/PrintingTests/StringPrinting.java
+++ b/test/hotspot/jtreg/runtime/PrintingTests/StringPrinting.java
@@ -28,7 +28,7 @@
  * @library /test/lib
  * @build jdk.test.whitebox.WhiteBox
  * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
- * @run main/othervm -Xbootclasspath/a:. -XX:+WhiteBoxAPI StringPrinting
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI StringPrinting
  */
 
 import jdk.test.whitebox.WhiteBox;