diff --git a/include/boost/predef/compiler/comeau.h b/include/boost/predef/compiler/comeau.h
index 841598f..15a4564 100644
--- a/include/boost/predef/compiler/comeau.h
+++ b/include/boost/predef/compiler/comeau.h
@@ -29,7 +29,7 @@ Version number available as major, minor, and patch.
  */
 
 #if defined(__COMO__)
-#   if !defined(BOOST_COMP_COMO_DETECTION) && defined(__CONO_VERSION__)
+#   if !defined(BOOST_COMP_COMO_DETECTION) && defined(__COMO_VERSION__)
 #       define BOOST_COMP_COMO_DETECTION BOOST_PREDEF_MAKE_0X_VRP(__COMO_VERSION__)
 #   endif
 #   if !defined(BOOST_COMP_COMO_DETECTION)