diff --git a/c64/basic/cmd_sys.s b/c64/basic/cmd_sys.s
index 979c1457..86830bd0 100644
--- a/c64/basic/cmd_sys.s
+++ b/c64/basic/cmd_sys.s
@@ -20,9 +20,9 @@ cmd_sys:
 	;; Setup the register values
 	lda sys_reg_p
 	pha
-	lda sys_reg_a
-	ldx sys_reg_x
 	ldy sys_reg_y
+	ldx sys_reg_x
+	lda sys_reg_a
 	plp
 
 	;; Call the routine.