diff --git a/sys/netinet6/in6_mcast.c b/sys/netinet6/in6_mcast.c
index f9ff10a302f3..3f948e14f68e 100644
--- a/sys/netinet6/in6_mcast.c
+++ b/sys/netinet6/in6_mcast.c
@@ -526,6 +526,9 @@ in6m_release_locked(struct in6_multi *inm)
 
 	in6m_purge(inm);
 
+	/* Free state-change requests that might be queued. */
+	_IF_DRAIN(&inm->in6m_scq);
+
 	free(inm, M_IP6MADDR);
 
 	if_delmulti_ifma(ifma);