diff --git a/include/memory b/include/memory
index 912a43f64..bcf4d6de7 100644
--- a/include/memory
+++ b/include/memory
@@ -1750,7 +1750,7 @@ public:
     typedef const _Tp*        const_pointer;
     typedef const _Tp&        reference;
     typedef const _Tp&        const_reference;
-    typedef _Tp               value_type;
+    typedef const _Tp         value_type;
 
     typedef true_type propagate_on_container_move_assignment;