diff --git a/src/heap.h b/src/heap.h
index b91868c..75362ce 100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -254,7 +254,6 @@
   void RequestConcurrentGC();
 
   void RecordAllocationLocked(AllocSpace* space, const Object* object);
-  void RecordImageAllocations(Space* space);
 
   // TODO: can we teach GCC to understand the weird locking in here?
   void CollectGarbageInternal(bool concurrent, bool clear_soft_references) NO_THREAD_SAFETY_ANALYSIS;