diff --git a/include/vector b/include/vector
index 11d9a1b..a083bfe 100644
--- a/include/vector
+++ b/include/vector
@@ -502,6 +502,9 @@
     typedef _VSTD::reverse_iterator<iterator>         reverse_iterator;
     typedef _VSTD::reverse_iterator<const_iterator>   const_reverse_iterator;
 
+    static_assert((is_same<typename allocator_type::value_type, value_type>::value),
+                  "Allocator::value_type must be same type as value_type");
+
     _LIBCPP_INLINE_VISIBILITY
     vector()
         _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)