diff --git a/compiler/optimizing/code_generator_arm.h b/compiler/optimizing/code_generator_arm.h
index cfd7a3b..2e4dc1e 100644
--- a/compiler/optimizing/code_generator_arm.h
+++ b/compiler/optimizing/code_generator_arm.h
@@ -510,6 +510,8 @@
   // artReadBarrierForRootSlow.
   void GenerateReadBarrierForRootSlow(HInstruction* instruction, Location out, Location root);
 
+  void GenerateNop();
+
  private:
   // Factored implementation of GenerateFieldLoadWithBakerReadBarrier
   // and GenerateArrayLoadWithBakerReadBarrier.