diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index fa057d1..5104bc0 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -880,6 +880,8 @@
 		 * to be intended in a v3 query.
 		 */
 		max_delay = IGMPV3_MRC(ih3->code)*(HZ/IGMP_TIMER_SCALE);
+		if (!max_delay)
+			max_delay = 1;	/* can't mod w/ 0 */
 	} else { /* v3 */
 		if (!pskb_may_pull(skb, sizeof(struct igmpv3_query)))
 			return;