diff --git a/include/boost/range/iterator_range.hpp b/include/boost/range/iterator_range.hpp
index 6308a3d..65510ed 100755
--- a/include/boost/range/iterator_range.hpp
+++ b/include/boost/range/iterator_range.hpp
@@ -184,7 +184,7 @@ namespace boost {
 
             bool equal( const iterator_range& r ) const
             {
-                return m_Begin == r.m_Begin && m_End == r.m_End;
+                return singular == r.singular && m_Begin == r.m_Begin && m_End == r.m_End;
             }
             
         private: