diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 838887c1efd..8d5e849d6e3 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2018-07-03  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/alloc_traits.h: Remove redundant preprocessor
+	condition.
+
 2018-07-03  François Dumont  <fdumont@gcc.gnu.org>
 
 	* include/bits/stl_algobase.h (__niter_wrap): New.
diff --git a/libstdc++-v3/include/bits/alloc_traits.h b/libstdc++-v3/include/bits/alloc_traits.h
index eee9d8502e4..742fdd0447d 100644
--- a/libstdc++-v3/include/bits/alloc_traits.h
+++ b/libstdc++-v3/include/bits/alloc_traits.h
@@ -598,7 +598,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     : is_copy_constructible<_Tp>
     { };
 
-#if __cplusplus >= 201103L
   // Trait to detect Allocator-like types.
   template<typename _Alloc, typename = void>
     struct __is_allocator : false_type { };
@@ -612,10 +611,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   template<typename _Alloc>
     using _RequireAllocator
       = typename enable_if<__is_allocator<_Alloc>::value, _Alloc>::type;
-#endif
 
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace std
-
-#endif
-#endif
+#endif // C++11
+#endif // _ALLOC_TRAITS_H