diff --git a/ndnboost/config/compiler/metrowerks.hpp b/ndnboost/config/compiler/metrowerks.hpp
index 184cb71..4ca8af8 100644
--- a/ndnboost/config/compiler/metrowerks.hpp
+++ b/ndnboost/config/compiler/metrowerks.hpp
@@ -119,6 +119,7 @@
 #define BOOST_NO_CXX11_VARIADIC_TEMPLATES
 #define BOOST_NO_CXX11_VARIADIC_MACROS
 #define BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
+#define BOOST_NO_CXX11_USER_DEFINED_LITERALS
 
 #define BOOST_COMPILER "Metrowerks CodeWarrior C++ version " BOOST_STRINGIZE(BOOST_COMPILER_VERSION)