diff --git a/include/boost/regex/v4/match_flags.hpp b/include/boost/regex/v4/match_flags.hpp
index e21de6cf..5fa0b075 100644
--- a/include/boost/regex/v4/match_flags.hpp
+++ b/include/boost/regex/v4/match_flags.hpp
@@ -71,7 +71,7 @@ typedef enum _match_flags
 
 } match_flags;
 
-#if defined(__BORLANDC__)
+#if defined(__BORLANDC__) || BOOST_WORKAROUND(BOOST_MSVC, <= 1310)
 typedef unsigned long match_flag_type;
 #else
 typedef match_flags match_flag_type;