--- sis900.c.orig	Mon Oct 27 17:48:52 2003
+++ sis900.c	Mon Oct 27 17:49:36 2003
@@ -2101,9 +2101,8 @@
 		rx_mode = RFAAB;
 		for (i = 0, mclist = net_dev->mc_list; mclist && i < net_dev->mc_count;
 		     i++, mclist = mclist->next) {
-			unsigned int bit_nr =
-				sis900_mcast_bitnr(mclist->dmi_addr, revision);
-			mc_filter[bit_nr >> 4] |= (1 << bit_nr);
+			set_bit(sis900_mcast_bitnr(mclist->dmi_addr, revision),
+				mc_filter);
 		}
 	}