diff --git a/include/boost/type_traits/is_convertible.hpp b/include/boost/type_traits/is_convertible.hpp
index 2b933bc..38a860a 100644
--- a/include/boost/type_traits/is_convertible.hpp
+++ b/include/boost/type_traits/is_convertible.hpp
@@ -129,7 +129,8 @@ struct is_convertible_basic_impl
 };
 
 #elif (defined(BOOST_MSVC) && (BOOST_MSVC > 1310)) \
-      || (defined(__EDG_VERSION__) && (__EDG_VERSION__ >= 245) && !defined(__ICL))
+      || (defined(__EDG_VERSION__) && (__EDG_VERSION__ >= 245) && !defined(__ICL)) \
+      || defined(__IBMCPP__)
 //
 // This is *almost* an ideal world implementation as it doesn't rely
 // on undefined behaviour by passing UDT's through (...).