diff --git a/mt7615/mcu.c b/mt7615/mcu.c
index 7c14de2e..9cceaa9f 100644
--- a/mt7615/mcu.c
+++ b/mt7615/mcu.c
@@ -423,6 +423,7 @@ mt7615_mcu_rx_log_message(struct mt7615_dev *dev, struct sk_buff *skb)
 		break;
 	}
 
+	skb->data[skb->len] = 0;
 	wiphy_info(mt76_hw(dev)->wiphy, "%s: %s", type, data);
 }