diff --git a/sound/isa/cs423x/cs4236_lib.c b/sound/isa/cs423x/cs4236_lib.c
index 33e9cf1..6a85fdc 100644
--- a/sound/isa/cs423x/cs4236_lib.c
+++ b/sound/isa/cs423x/cs4236_lib.c
@@ -967,7 +967,8 @@
 	int err;
 	struct snd_kcontrol_new *kcontrol;
 
-	snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
+	if (snd_BUG_ON(!chip || !chip->card))
+		return -EINVAL;
 	card = chip->card;
 	strcpy(card->mixername, snd_wss_chip_id(chip));