diff --git a/runtime/instrumentation.h b/runtime/instrumentation.h
index 8972f3a..77314c60 100644
--- a/runtime/instrumentation.h
+++ b/runtime/instrumentation.h
@@ -345,7 +345,7 @@
   void InstallStubsForMethod(mirror::ArtMethod* method)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
-  void VisitRoots(RootCallback* callback, void* arg) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
+  void VisitRoots(RootVisitor* visitor) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
       LOCKS_EXCLUDED(deoptimized_methods_lock_);
 
  private: