diff --git a/contrib/libstdc++/include/bits/stl_multimap.h b/contrib/libstdc++/include/bits/stl_multimap.h
index bb1c1544e716..85feba78c556 100644
--- a/contrib/libstdc++/include/bits/stl_multimap.h
+++ b/contrib/libstdc++/include/bits/stl_multimap.h
@@ -185,7 +185,7 @@ _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD)
       template <typename _InputIterator>
         multimap(_InputIterator __first, _InputIterator __last)
 	: _M_t()
-        { _M_t._M_insert_unique(__first, __last); }
+        { _M_t._M_insert_equal(__first, __last); }
 
       /**
        *  @brief  Builds a %multimap from a range.