diff --git a/src/hotspot/share/gc/shared/generation.hpp b/src/hotspot/share/gc/shared/generation.hpp
index 4bf6c8b12a8..cb1d657446e 100644
--- a/src/hotspot/share/gc/shared/generation.hpp
+++ b/src/hotspot/share/gc/shared/generation.hpp
@@ -311,7 +311,6 @@ class Generation: public CHeapObj<mtGC> {
   virtual void adjust_pointers();
   // Mark sweep support phase4
   virtual void compact();
-  virtual void post_compact() { ShouldNotReachHere(); }
 #endif
 
   // Accessing "marks".