diff --git a/mp3lib/dct64_k7.c b/mp3lib/dct64_k7.c
index 9e960129ac..03538086d6 100644
--- a/mp3lib/dct64_k7.c
+++ b/mp3lib/dct64_k7.c
@@ -758,5 +758,5 @@ void __attribute__ (( __stdcall__ )) dct64_MMX_3dnowex(real *a,real *b,real *c)
 "	femms\n\t"
 	:
 	:"m"(a),"m"(b),"m"(c),"m"(tmp[0])
-	:"memory","%ebx","%esi","%edi");
+	:"memory","%eax","%ebx","%ecx","%edx","%esi","%edi");
 }