diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 48c1e0a..b0f037c 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1691,9 +1691,9 @@
 		if (i->alen != dev->addr_len)
 			return -EINVAL;
 		if (what > 0)
-			return dev_mc_add(dev, i->addr, i->alen, 0);
+			return dev_mc_add(dev, i->addr);
 		else
-			return dev_mc_delete(dev, i->addr, i->alen, 0);
+			return dev_mc_del(dev, i->addr);
 		break;
 	case PACKET_MR_PROMISC:
 		return dev_set_promiscuity(dev, what);