--- a/src/video/cocoa/SDL_cocoamessagebox.m	Thu May 02 21:40:59 2013 -0400
+++ b/src/video/cocoa/SDL_cocoamessagebox.m	Fri May 03 14:11:41 2013 +0930
@@ -22,7 +22,7 @@
 
 #if SDL_VIDEO_DRIVER_COCOA
 
-#if defined(__APPLE__) && defined(__POWERPC__)
+#if defined(__APPLE__) && defined(__POWERPC__) && !defined(__APPLE_ALTIVEC__)
 #include <altivec.h>
 #undef bool
 #undef vector