src/java.base/share/classes/java/lang/ref/Cleaner.java

@@ -215,11 +215,11 @@
      * @return a {@code Cleanable} instance
      */
     public Cleanable register(Object obj, Runnable action) {
         Objects.requireNonNull(obj, "obj");
         Objects.requireNonNull(action, "action");
-        return new CleanerImpl.PhantomCleanableRef(obj, this, action);
+        return new CleanerImpl.PhantomCleanableImpl(obj, this, action);
     }
 
     /**
      * {@code Cleanable} represents an object and a
      * cleaning action registered in a {@code Cleaner}.