diff --git a/include/boost/config/compiler/borland.hpp b/include/boost/config/compiler/borland.hpp
index 101b3687..47b2aafa 100644
--- a/include/boost/config/compiler/borland.hpp
+++ b/include/boost/config/compiler/borland.hpp
@@ -114,6 +114,7 @@
 #  define BOOST_NO_IS_ABSTRACT
 #  define BOOST_NO_FUNCTION_TYPE_SPECIALIZATIONS
 #  define BOOST_NO_USING_TEMPLATE
+#  define BOOST_SP_NO_SP_CONVERTIBLE
 
 // Temporary workaround
 #define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS
diff --git a/include/boost/config/compiler/codegear.hpp b/include/boost/config/compiler/codegear.hpp
index 8d834b0e..36a70299 100644
--- a/include/boost/config/compiler/codegear.hpp
+++ b/include/boost/config/compiler/codegear.hpp
@@ -42,6 +42,7 @@
 #  define BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
 #  define BOOST_NO_TYPENAME_WITH_CTOR    // Cannot use typename keyword when making temporaries of a dependant type
 #  define BOOST_NO_NESTED_FRIENDSHIP     // TC1 gives nested classes access rights as any other member
+#  define BOOST_SP_NO_SP_CONVERTIBLE
 
 // Temporary hack, until specific MPL preprocessed headers are generated
 #  define BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS