/* NIC to be configured in promiscuous mode. */
                receivemode = IPG_RM_RECEIVEALLFRAMES;
        } else if ((dev->flags & IFF_ALLMULTI) ||
-                  (dev->flags & IFF_MULTICAST &
+                  ((dev->flags & IFF_MULTICAST) &&
                    (dev->mc_count > IPG_MULTICAST_HASHTABLE_SIZE))) {
                /* NIC to be configured to receive all multicast
                 * frames. */
                receivemode |= IPG_RM_RECEIVEMULTICAST;
-       } else if (dev->flags & IFF_MULTICAST & (dev->mc_count > 0)) {
+       } else if ((dev->flags & IFF_MULTICAST) && (dev->mc_count > 0)) {
                /* NIC to be configured to receive selected
                 * multicast addresses. */
                receivemode |= IPG_RM_RECEIVEMULTICASTHASH;