diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c
index 3801225600..8fc1f4b37e 100644
--- a/target/linux/generic/files/drivers/net/phy/ar8216.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8216.c
@@ -1549,7 +1549,6 @@ ar8216_sw_get_port_mib(struct switch_dev *dev,
 		goto unlock;
 
 	ar8216_mib_fetch_port_stat(priv, port, false);
-	mutex_unlock(&priv->mib_lock);
 
 	len += snprintf(buf + len, sizeof(priv->buf) - len,
 			"Port %d MIB counters\n",