diff --git a/sound/soc/apple/mca.c b/sound/soc/apple/mca.c
index 24381c42eb54..9cceeb259952 100644
--- a/sound/soc/apple/mca.c
+++ b/sound/soc/apple/mca.c
@@ -210,7 +210,7 @@ static void mca_fe_early_trigger(struct snd_pcm_substream *substream, int cmd,
 			   SERDES_CONF_SOME_RST);
 		readl_relaxed(cl->base + serdes_conf);
 		mca_modify(cl, serdes_conf, SERDES_STATUS_RST, 0);
-		WARN_ON(readl_relaxed(cl->base + REG_SERDES_STATUS) &
+		WARN_ON(readl_relaxed(cl->base + serdes_unit + REG_SERDES_STATUS) &
 			SERDES_STATUS_RST);
 		break;
 	default: