diff --git a/include/SDL_config_macosx.h b/include/SDL_config_macosx.h
index b3cbbae49..7b3eaf8e7 100644
--- a/include/SDL_config_macosx.h
+++ b/include/SDL_config_macosx.h
@@ -76,6 +76,8 @@
 
 /* Enable assembly routines */
 #define SDL_ASSEMBLY_ROUTINES	1
+#ifdef __ppc__
 #define SDL_ALTIVEC_BLITTERS	1
+#endif
 
 #endif /* _SDL_config_macosx_h */