Down-integrate from google3.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/google/protobuf/reflection.h b/src/google/protobuf/reflection.h
index 4ff0f6b4..671aafdc 100755
--- a/src/google/protobuf/reflection.h
+++ b/src/google/protobuf/reflection.h
@@ -553,7 +553,7 @@ struct RefTypeTraits<
 
 template<typename T>
 struct RefTypeTraits<
-    T, typename internal::enable_if<internal::is_same<string, T>::value>::type> {
+    T, typename internal::enable_if< ::google::protobuf::internal::is_same<string, T>::value>::type> {
   typedef RepeatedFieldRefIterator<T> iterator;
   typedef RepeatedFieldAccessor AccessorType;
   typedef string AccessorValueType;