diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 6cc4d1f..518cbb9 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1918,7 +1918,7 @@
  * Add multicast single-source filter to the interface list
  */
 static int ip6_mc_add1_src(struct ifmcaddr6 *pmc, int sfmode,
-	const struct in6_addr *psfsrc, int delta)
+	const struct in6_addr *psfsrc)
 {
 	struct ip6_sf_list *psf, *psf_prev;
 
@@ -2049,7 +2049,7 @@
 		pmc->mca_sfcount[sfmode]++;
 	err = 0;
 	for (i=0; i<sfcount; i++) {
-		err = ip6_mc_add1_src(pmc, sfmode, &psfsrc[i], delta);
+		err = ip6_mc_add1_src(pmc, sfmode, &psfsrc[i]);
 		if (err)
 			break;
 	}