diff --git a/pimd/pim_oil.c b/pimd/pim_oil.c
index 8fa2c96034..3bfb31e0c6 100644
--- a/pimd/pim_oil.c
+++ b/pimd/pim_oil.c
@@ -429,6 +429,8 @@ int pim_channel_add_oif(struct channel_oil *channel_oil, struct interface *oif,
 	/* Prevent single protocol from subscribing same interface to
 	   channel (S,G) multiple times */
 	if (channel_oil->oif_flags[pim_ifp->mroute_vif_index] & proto_mask) {
+		channel_oil->oif_flags[pim_ifp->mroute_vif_index] |= proto_mask;
+
 		if (PIM_DEBUG_MROUTE) {
 			zlog_debug(
 				"%s %s: existing protocol mask %u requested OIF %s (vif_index=%d, min_ttl=%d) for channel (S,G)=(%pPAs,%pPAs)",