1 files changed, 2 insertions, 2 deletions
diff --git a/src/google/protobuf/reflection.h b/src/google/protobuf/reflection.h
index d5a6653c..fcb9a435 100755
--- a/src/google/protobuf/reflection.h
+++ b/src/google/protobuf/reflection.h
@@ -570,8 +570,8 @@ struct RefTypeTraits<
   typedef RepeatedFieldRefIterator<T> iterator;
   typedef RepeatedFieldAccessor AccessorType;
   typedef string AccessorValueType;
-  typedef string IteratorValueType;
-  typedef string* IteratorPointerType;
+  typedef const string IteratorValueType;
+  typedef const string* IteratorPointerType;
   static const FieldDescriptor::CppType cpp_type =
       FieldDescriptor::CPPTYPE_STRING;
   static const Descriptor* GetMessageFieldDescriptor() {