diff --git a/include/boost/unordered/detail/extract_key.hpp b/include/boost/unordered/detail/extract_key.hpp
index 6db92799..92524b54 100644
--- a/include/boost/unordered/detail/extract_key.hpp
+++ b/include/boost/unordered/detail/extract_key.hpp
@@ -118,15 +118,16 @@ namespace detail {
             return no_key();
         }
 
-#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
-        template <class Arg1, class Arg2, class... Args>
-        static no_key extract(Arg1 const&, Arg2 const&, Args const&...)
+        template <class Arg1, class Arg2>
+        static no_key extract(Arg1 const&, Arg2 const&)
         {
             return no_key();
         }
-#else
-        template <class Arg, class Arg1>
-        static no_key extract(Arg const&, Arg1 const&)
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+        template <class Arg1, class Arg2, class Arg3, class... Args>
+        static no_key extract(Arg1 const&, Arg2 const&, Arg3 const&,
+                Args const&...)
         {
             return no_key();
         }