diff --git a/contrib/libstdc++/include/debug/map.h b/contrib/libstdc++/include/debug/map.h
index 96591ca15c8..174d3c723d3 100644
--- a/contrib/libstdc++/include/debug/map.h
+++ b/contrib/libstdc++/include/debug/map.h
@@ -74,8 +74,6 @@ namespace __debug
       typedef std::reverse_iterator<iterator>       reverse_iterator;
       typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
 
-      using _Base::value_compare;
-
       // 23.3.1.1 construct/copy/destroy:
       explicit map(const _Compare& __comp = _Compare(),
 		   const _Allocator& __a = _Allocator())
diff --git a/contrib/libstdc++/include/debug/multimap.h b/contrib/libstdc++/include/debug/multimap.h
index cbd6704520f..7dcbb3def1b 100644
--- a/contrib/libstdc++/include/debug/multimap.h
+++ b/contrib/libstdc++/include/debug/multimap.h
@@ -74,8 +74,6 @@ namespace __debug
       typedef std::reverse_iterator<iterator>        reverse_iterator;
       typedef std::reverse_iterator<const_iterator>  const_reverse_iterator;
 
-      using _Base::value_compare;
-
       // 23.3.1.1 construct/copy/destroy:
       explicit multimap(const _Compare& __comp = _Compare(),
 			const _Allocator& __a = _Allocator())