diff --git a/test/hotspot/jtreg/gc/metaspace/TestMetaspaceInitialization.java b/test/hotspot/jtreg/gc/metaspace/TestMetaspaceInitialization.java
index 7bd0f0b438a..d7270da0145 100644
--- a/test/hotspot/jtreg/gc/metaspace/TestMetaspaceInitialization.java
+++ b/test/hotspot/jtreg/gc/metaspace/TestMetaspaceInitialization.java
@@ -33,6 +33,7 @@ import java.util.ArrayList;
  */
 public class TestMetaspaceInitialization {
     private class Internal {
+        @SuppressWarnings("unused")
         public int x;
         public Internal(int x) {
             this.x = x;