diff --git a/src/audio/SDL_mixer_MMX_VC.h b/src/audio/SDL_mixer_MMX_VC.h
index afdae478f..770e7f9f6 100644
--- a/src/audio/SDL_mixer_MMX_VC.h
+++ b/src/audio/SDL_mixer_MMX_VC.h
@@ -21,7 +21,8 @@
 */
 #include "SDL_config.h"
 
-#if ((defined(_MSC_VER) && defined(M_I86)) || (defined(__WATCOMC__))) && defined(SDL_ASSEMBLY_ROUTINES)
+
+#if ((defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)) && defined(SDL_ASSEMBLY_ROUTINES)
 // headers for MMX assembler version of SDL_MixAudio
 // Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
 // Converted to Intel ASM notation by Cth