diff --git a/include/boost/config/stdlib/sgi.hpp b/include/boost/config/stdlib/sgi.hpp
index 89e2c5ea..14abac32 100644
--- a/include/boost/config/stdlib/sgi.hpp
+++ b/include/boost/config/stdlib/sgi.hpp
@@ -51,7 +51,7 @@
 //
 // SGI's new iostreams have missing "const" in messages<>::open
 //
-#if defined(__sgi) && (_COMPILER_VERSION <= 730) && defined(__SGI_STL_OWN_IOSTREAMS)
+#if defined(__sgi) && (_COMPILER_VERSION <= 730) && defined(__STL_USE_NEW_IOSTREAMS)
 #  define BOOST_NO_STD_MESSAGES
 #endif