diff --git a/engines/asm/e_padlock-x86.pl b/engines/asm/e_padlock-x86.pl
index 5b097ce3ef9b1..07f7000fd38a3 100644
--- a/engines/asm/e_padlock-x86.pl
+++ b/engines/asm/e_padlock-x86.pl
@@ -116,6 +116,8 @@
 &function_begin_B("padlock_key_bswap");
 	&mov	("edx",&wparam(0));
 	&mov	("ecx",&DWP(240,"edx"));
+	&inc	("ecx");
+	&shl	("ecx",2);
 &set_label("bswap_loop");
 	&mov	("eax",&DWP(0,"edx"));
 	&bswap	("eax");
diff --git a/engines/asm/e_padlock-x86_64.pl b/engines/asm/e_padlock-x86_64.pl
index 09b0aaa48dfed..dfd2ae6563751 100644
--- a/engines/asm/e_padlock-x86_64.pl
+++ b/engines/asm/e_padlock-x86_64.pl
@@ -92,6 +92,8 @@
 .align	16
 padlock_key_bswap:
 	mov	240($arg1),%edx
+	inc	%edx
+	shl	\$2,%edx
 .Lbswap_loop:
 	mov	($arg1),%eax
 	bswap	%eax