--- sis.h_old	2005-02-01 02:10:44.000000000 +0100
+++ sis.h	2005-02-01 02:11:31.000000000 +0100
@@ -472,7 +472,7 @@
 
 /* Used for makeing use of the BIOS scratch area (save/restore mode number) */
 #undef SIS_USE_BIOS_SCRATCH
-#if (defined(i386) || defined(__i386) || defined(__i386__) || defined(__AMD64__))
+#if (defined(i386) || defined(__i386) || defined(__i386__) || defined(__AMD64__) || defined(__amd64__))
 #define SIS_USE_BIOS_SCRATCH
 #endif