diff --git a/drivers/input/serio/hp_sdc_mlc.c b/drivers/input/serio/hp_sdc_mlc.c
index 1c9426fd520..aa4a8a4ccfd 100644
--- a/drivers/input/serio/hp_sdc_mlc.c
+++ b/drivers/input/serio/hp_sdc_mlc.c
@@ -270,9 +270,10 @@ static void hp_sdc_mlc_out (hil_mlc *mlc) {
 
  do_control:
 	priv->emtestmode = mlc->opacket & HIL_CTRL_TEST;
-	if ((mlc->opacket & (HIL_CTRL_APE | HIL_CTRL_IPF)) == HIL_CTRL_APE) {
-		BUG(); /* we cannot emulate this, it should not be used. */
-	}
+	
+	/* we cannot emulate this, it should not be used. */
+	BUG_ON((mlc->opacket & (HIL_CTRL_APE | HIL_CTRL_IPF)) == HIL_CTRL_APE);
+	
 	if ((mlc->opacket & HIL_CTRL_ONLY) == HIL_CTRL_ONLY) goto control_only;
 	if (mlc->opacket & HIL_CTRL_APE) { 
 		BUG(); /* Should not send command/data after engaging APE */