diff --git a/drivers/net/meth.c b/drivers/net/meth.c
index 0b32648..4cb364e 100644
--- a/drivers/net/meth.c
+++ b/drivers/net/meth.c
@@ -287,7 +287,7 @@
 
 	/* Initial mode: 10 | Half-duplex | Accept normal packets */
 	priv->mac_ctrl = METH_ACCEPT_MCAST | METH_DEFAULT_IPG;
-	if (dev->flags | IFF_PROMISC)
+	if (dev->flags & IFF_PROMISC)
 		priv->mac_ctrl |= METH_PROMISC;
 	mace->eth.mac_ctrl = priv->mac_ctrl;