diff --git a/src/hotspot/share/code/compiledMethod.hpp b/src/hotspot/share/code/compiledMethod.hpp
index 4a8cfa5..2ac9cc2 100644
--- a/src/hotspot/share/code/compiledMethod.hpp
+++ b/src/hotspot/share/code/compiledMethod.hpp
@@ -401,7 +401,7 @@ public:
   virtual bool is_unloading() = 0;
 
   void unload_nmethod_caches(bool class_unloading_occurred);
-  virtual void do_unloading(bool unloading_occurred) { }
+  virtual void do_unloading(bool unloading_occurred) = 0;
 
 private:
   PcDesc* find_pc_desc(address pc, bool approximate) {