diff --git a/runtime/mirror/string.h b/runtime/mirror/string.h
index fbee2d7..80ebd2c 100644
--- a/runtime/mirror/string.h
+++ b/runtime/mirror/string.h
@@ -27,6 +27,7 @@
 template<class T> class Handle;
 struct StringOffsets;
 class StringPiece;
+class StubTest_ReadBarrierForRoot_Test;
 
 namespace mirror {
 
@@ -179,7 +180,7 @@
   static GcRoot<Class> java_lang_String_;
 
   friend struct art::StringOffsets;  // for verifying offset information
-  ART_FRIEND_TEST(ObjectTest, StringLength);  // for SetOffset and SetCount
+  ART_FRIEND_TEST(art::StubTest, ReadBarrierForRoot);  // For java_lang_String_.
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(String);
 };