diff --git a/include/boost/range/irange.hpp b/include/boost/range/irange.hpp
index b1a1240..3c62d62 100644
--- a/include/boost/range/irange.hpp
+++ b/include/boost/range/irange.hpp
@@ -203,6 +203,22 @@ namespace boost
         }
     };
 
+    template<typename Integer>
+    integer_range<Integer>
+    irange(int last)
+    {
+        BOOST_ASSERT( 0 <= last );
+        return integer_range<Integer>(0, last);
+    }
+
+    template<typename Integer>
+    integer_range<Integer>
+    irange(int first, int last)
+    {
+        BOOST_ASSERT( first <= last );
+        return integer_range<Integer>(first, last);
+    }
+
     template<typename Integer>
     integer_range<Integer>
     irange(Integer first, Integer last)