@@ -1,7 +1,8 @@
 #undef OF_APPLE_RUNTIME
 #undef OF_BIG_ENDIAN
+#undef OF_CLASSIC_MACOS
 #undef OF_FLOAT_BIG_ENDIAN
 #undef OF_HAVE_AFUNIX_H
 #undef OF_HAVE_APPLETALK
 #undef OF_HAVE_ATOMIC_BUILTINS
 #undef OF_HAVE_ATOMIC_OPS