diff --git a/runtime/mirror/object.h b/runtime/mirror/object.h
index 343c9bc..3ab52eb 100644
--- a/runtime/mirror/object.h
+++ b/runtime/mirror/object.h
@@ -182,7 +182,12 @@
   template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags>
   DoubleArray* AsDoubleArray() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
-  template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags>
+  template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
+           ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
+  bool IsString() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
+  template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags,
+           ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
   String* AsString() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags>