diff --git a/compiler/utils/arena_bit_vector.cc b/compiler/utils/arena_bit_vector.cc
index de35f3d..f17e5a9 100644
--- a/compiler/utils/arena_bit_vector.cc
+++ b/compiler/utils/arena_bit_vector.cc
@@ -16,12 +16,12 @@
 
 #include "arena_allocator.h"
 #include "arena_bit_vector.h"
-#include "base/allocator.h"
 
 namespace art {
 
 template <typename ArenaAlloc>
-class ArenaBitVectorAllocator FINAL : public Allocator {
+class ArenaBitVectorAllocator FINAL : public Allocator,
+    public ArenaObject<kArenaAllocGrowableBitMap> {
  public:
   explicit ArenaBitVectorAllocator(ArenaAlloc* arena) : arena_(arena) {}
   ~ArenaBitVectorAllocator() {}
@@ -32,11 +32,6 @@
 
   virtual void Free(void*) {}  // Nop.
 
-  static void* operator new(size_t size, ArenaAlloc* arena) {
-    return arena->Alloc(sizeof(ArenaBitVectorAllocator), kArenaAllocGrowableBitMap);
-  }
-  static void operator delete(void* p) {}  // Nop.
-
  private:
   ArenaAlloc* const arena_;
   DISALLOW_COPY_AND_ASSIGN(ArenaBitVectorAllocator);