diff --git a/test/lib/sun/hotspot/WhiteBox.java b/test/lib/sun/hotspot/WhiteBox.java
index 690b07a..7fd742b 100644
--- a/test/lib/sun/hotspot/WhiteBox.java
+++ b/test/lib/sun/hotspot/WhiteBox.java
@@ -376,6 +376,7 @@
   public native void freeMetaspace(ClassLoader classLoader, long addr, long size);
   public native long incMetaspaceCapacityUntilGC(long increment);
   public native long metaspaceCapacityUntilGC();
+  public native boolean metaspaceShouldConcurrentCollect();
 
   // Force Young GC
   public native void youngGC();