diff --git a/liba52/liba52_amd64_changes.diff b/liba52/liba52_amd64_changes.diff
index 3c327cdb00..d0d5869c49 100644
--- a/liba52/liba52_amd64_changes.diff
+++ b/liba52/liba52_amd64_changes.diff
@@ -1182,7 +1182,7 @@ diff -u -r1.27 imdct.c
 +		"sub $16, %%"REG_D"			\n\t"
 +		"jnc 1b				 	\n\t"
 +		"pop %%"REG_BP"				\n\t"//no we didnt touch ebp *g*
-+		:: "r" (data), "r" (buf)
++		:: "b" (data), "c" (buf)
 +		: "%"REG_S, "%"REG_D, "%"REG_a, "%"REG_d
  	);