diff --git a/src/hotspot/share/gc/z/zMark.hpp b/src/hotspot/share/gc/z/zMark.hpp
index 727d9d9..5db86bc 100644
--- a/src/hotspot/share/gc/z/zMark.hpp
+++ b/src/hotspot/share/gc/z/zMark.hpp
@@ -66,6 +66,7 @@ private:
   void follow_partial_array(ZMarkStackEntry entry, bool finalizable);
   void follow_array_object(objArrayOop obj, bool finalizable);
   void follow_object(oop obj, bool finalizable);
+  void follow_klass(Klass* klass, bool finalizable);
   bool try_mark_object(ZMarkCache* cache, uintptr_t addr, bool finalizable);
   void mark_and_follow(ZMarkCache* cache, ZMarkStackEntry entry);