diff --git a/src/heap/marking-barrier.h b/src/heap/marking-barrier.h
index cb6d0f7651..f4ec18257b 100644
--- a/src/heap/marking-barrier.h
+++ b/src/heap/marking-barrier.h
@@ -44,8 +44,6 @@ class MarkingBarrier {
   inline bool MarkValue(HeapObject host, HeapObject value);
 
  private:
-  using MarkingState = MarkingState;
-
   inline bool WhiteToGreyAndPush(HeapObject value);
 
   void RecordRelocSlot(Code host, RelocInfo* rinfo, HeapObject target);