diff --git a/include/boost/range/algorithm/for_each.hpp b/include/boost/range/algorithm/for_each.hpp
index fe8ab80..ea731b2 100644
--- a/include/boost/range/algorithm/for_each.hpp
+++ b/include/boost/range/algorithm/for_each.hpp
@@ -32,7 +32,7 @@ namespace boost
             template<typename Iterator, typename UnaryFunction>
             inline UnaryFunction
             for_each_impl(Iterator first, Iterator last, UnaryFunction fun,
-                          typename enable_if<
+                          typename ::boost::enable_if<
                             is_reference_wrapper<UnaryFunction>,
                             void
                           >::type* = 0)
diff --git a/include/boost/range/detail/any_iterator.hpp b/include/boost/range/detail/any_iterator.hpp
index b45058e..9d1057c 100644
--- a/include/boost/range/detail/any_iterator.hpp
+++ b/include/boost/range/detail/any_iterator.hpp
@@ -356,7 +356,7 @@ namespace boost
                                 OtherDifference,
                                 Buffer
                             >& other,
-                         typename enable_if<
+                         typename ::boost::enable_if<
                             typename mpl::and_<
                                 typename is_mutable_reference<OtherReference>::type,
                                 typename is_const_reference<Reference>::type
@@ -387,7 +387,7 @@ namespace boost
                               , OtherDifference
                               , Buffer
                             >& other,
-                         typename enable_if<
+                         typename ::boost::enable_if<
                             typename mpl::or_<
                                 typename mpl::and_<
                                     typename is_mutable_reference<OtherReference>::type,
@@ -423,7 +423,7 @@ namespace boost
                               , OtherDifference
                               , Buffer
                             >& other,
-                        typename enable_if<
+                        typename ::boost::enable_if<
                             typename is_convertible_to_value_as_reference<
                                         OtherReference
                                       , Reference
diff --git a/include/boost/range/has_range_iterator.hpp b/include/boost/range/has_range_iterator.hpp
index 26a6452..9eb58b3 100644
--- a/include/boost/range/has_range_iterator.hpp
+++ b/include/boost/range/has_range_iterator.hpp
@@ -35,7 +35,7 @@ namespace boost
         template<class T>
         struct has_range_iterator_impl<
             T,
-            BOOST_DEDUCED_TYPENAME enable_if<
+            BOOST_DEDUCED_TYPENAME ::boost::enable_if<
                 BOOST_DEDUCED_TYPENAME mpl::eval_if<is_const<T>,
                     has_type<range_const_iterator<
                                 BOOST_DEDUCED_TYPENAME remove_const<T>::type> >,
@@ -56,7 +56,7 @@ namespace boost
         template<class T>
         struct has_range_const_iterator_impl<
             T,
-            BOOST_DEDUCED_TYPENAME enable_if<
+            BOOST_DEDUCED_TYPENAME ::boost::enable_if<
                 has_type<range_const_iterator<T> >
             >::type
         >
diff --git a/include/boost/range/iterator_range_core.hpp b/include/boost/range/iterator_range_core.hpp
index e6c77f5..cefabd4 100644
--- a/include/boost/range/iterator_range_core.hpp
+++ b/include/boost/range/iterator_range_core.hpp
@@ -422,7 +422,7 @@ public:
             template<class SinglePassRange>
             iterator_range(
                 const SinglePassRange& r,
-                BOOST_DEDUCED_TYPENAME enable_if<
+                BOOST_DEDUCED_TYPENAME ::boost::enable_if<
                     is_compatible_range<const SinglePassRange>
                 >::type* = 0
             )
@@ -433,7 +433,7 @@ public:
             template<class SinglePassRange>
             iterator_range(
                 SinglePassRange& r,
-                BOOST_DEDUCED_TYPENAME enable_if<
+                BOOST_DEDUCED_TYPENAME ::boost::enable_if<
                     is_compatible_range<SinglePassRange>
                 >::type* = 0
             )
@@ -497,7 +497,7 @@ public:
         // comparison operators
         /////////////////////////////////////////////////////////////////////
         template<class SinglePassRange1, class SinglePassRange2>
-        inline BOOST_DEDUCED_TYPENAME enable_if<
+        inline BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             mpl::or_<
                 is_convertible<
                     const SinglePassRange1&,
@@ -520,7 +520,7 @@ public:
         }
     
         template<class SinglePassRange1, class SinglePassRange2>
-        inline BOOST_DEDUCED_TYPENAME enable_if<
+        inline BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             mpl::or_<
                 is_convertible<
                     const SinglePassRange1&,
@@ -543,7 +543,7 @@ public:
         }
 
         template<class SinglePassRange1, class SinglePassRange2>
-        inline BOOST_DEDUCED_TYPENAME enable_if<
+        inline BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             mpl::or_<
                 is_convertible<
                     const SinglePassRange1&,
@@ -566,7 +566,7 @@ public:
         }
     
         template<class SinglePassRange1, class SinglePassRange2>
-        inline BOOST_DEDUCED_TYPENAME enable_if<
+        inline BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             mpl::or_<
                 is_convertible<
                     const SinglePassRange1&,
@@ -589,7 +589,7 @@ public:
         }
         
         template<class SinglePassRange1, class SinglePassRange2>
-        inline BOOST_DEDUCED_TYPENAME enable_if<
+        inline BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             mpl::or_<
                 is_convertible<
                     const SinglePassRange1&,
@@ -612,7 +612,7 @@ public:
         }
         
         template<class SinglePassRange1, class SinglePassRange2>
-        inline BOOST_DEDUCED_TYPENAME enable_if<
+        inline BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             mpl::or_<
                 is_convertible<
                     const SinglePassRange1&,
diff --git a/include/boost/range/size.hpp b/include/boost/range/size.hpp
index cd7a90e..d007bfc 100644
--- a/include/boost/range/size.hpp
+++ b/include/boost/range/size.hpp
@@ -30,7 +30,7 @@ namespace boost
     {
 
         template<class SinglePassRange>
-        inline typename enable_if<
+        inline typename ::boost::enable_if<
             has_member_size<SinglePassRange>,
             typename range_size<const SinglePassRange>::type
         >::type
diff --git a/include/boost/range/size_type.hpp b/include/boost/range/size_type.hpp
index ffdc3ac..db5a59b 100644
--- a/include/boost/range/size_type.hpp
+++ b/include/boost/range/size_type.hpp
@@ -61,7 +61,7 @@ namespace boost
         template<typename C>
         struct range_size<
             C,
-            BOOST_DEDUCED_TYPENAME enable_if<has_size_type<C>, void>::type
+            BOOST_DEDUCED_TYPENAME ::boost::enable_if<has_size_type<C>, void>::type
         >
         {
             typedef BOOST_DEDUCED_TYPENAME C::size_type type;
diff --git a/include/boost/range/sub_range.hpp b/include/boost/range/sub_range.hpp
index e2fc480..ecc045b 100644
--- a/include/boost/range/sub_range.hpp
+++ b/include/boost/range/sub_range.hpp
@@ -190,7 +190,7 @@ public:
         template< class ForwardRange2 >
         sub_range(
             ForwardRange2& r,
-            BOOST_DEDUCED_TYPENAME enable_if<
+            BOOST_DEDUCED_TYPENAME ::boost::enable_if<
                 is_compatible_range<ForwardRange2>
             >::type* = 0
         )
@@ -201,7 +201,7 @@ public:
         template< class ForwardRange2 >
         sub_range(
             const ForwardRange2& r,
-            BOOST_DEDUCED_TYPENAME enable_if<
+            BOOST_DEDUCED_TYPENAME ::boost::enable_if<
                 is_compatible_range<const ForwardRange2>
             >::type* = 0
         )
@@ -235,7 +235,7 @@ public:
         { }
 
         template<class ForwardRange2>
-        BOOST_DEDUCED_TYPENAME enable_if<
+        BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             is_compatible_range<ForwardRange2>,
             sub_range&
         >::type
@@ -246,7 +246,7 @@ public:
         }
 
         template<class ForwardRange2>
-        BOOST_DEDUCED_TYPENAME enable_if<
+        BOOST_DEDUCED_TYPENAME ::boost::enable_if<
             is_compatible_range<const ForwardRange2>,
             sub_range&
         >::type