diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 1560bb621a3..c4a42d97015 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1160,8 +1160,9 @@ static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
 {
 	struct qeth_card *card = container_of(slr, struct qeth_card,
 					qeth_service_level);
-	seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card),
-			card->info.mcl_level);
+	if (card->info.mcl_level[0])
+		seq_printf(m, "qeth: %s firmware level %s\n",
+			CARD_BUS_ID(card), card->info.mcl_level);
 }
 
 static struct qeth_card *qeth_alloc_card(void)