diff --git a/include/boost/regex/config.hpp b/include/boost/regex/config.hpp
index 2ca3cbd5..7e0ffb6c 100644
--- a/include/boost/regex/config.hpp
+++ b/include/boost/regex/config.hpp
@@ -57,6 +57,9 @@
 #ifdef __MWERKS__
 #  define BOOST_REGEX_NO_EXTERNAL_TEMPLATES
 #endif
+#ifdef __IBMCPP__
+#  define BOOST_REGEX_NO_EXTERNAL_TEMPLATES
+#endif
 
 
 
@@ -610,3 +613,4 @@ inline void pointer_construct(T* p, const T& t)
 #endif
 
 
+