diff --git a/include/boost/regex/config.hpp b/include/boost/regex/config.hpp
index 581327e3..17f33b5f 100644
--- a/include/boost/regex/config.hpp
+++ b/include/boost/regex/config.hpp
@@ -206,6 +206,8 @@ using std::distance;
 #  define BOOST_REGEX_NO_W32
 #endif
 
+#ifdef __COMO__
+
 
 /*****************************************************************************
  *