diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 313ad93..fa057d1 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1579,7 +1579,7 @@
  * Add multicast single-source filter to the interface list
  */
 static int ip_mc_add1_src(struct ip_mc_list *pmc, int sfmode,
-	__be32 *psfsrc, int delta)
+	__be32 *psfsrc)
 {
 	struct ip_sf_list *psf, *psf_prev;
 
@@ -1714,7 +1714,7 @@
 		pmc->sfcount[sfmode]++;
 	err = 0;
 	for (i=0; i<sfcount; i++) {
-		err = ip_mc_add1_src(pmc, sfmode, &psfsrc[i], delta);
+		err = ip_mc_add1_src(pmc, sfmode, &psfsrc[i]);
 		if (err)
 			break;
 	}