diff --git a/nest/proto.c b/nest/proto.c
index e64cef28..853b1cf9 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -313,9 +313,9 @@ proto_remove_channels(struct proto *p)
 }
 
 static void
-channel_roa_in_changed(struct rt_subscription *s)
+channel_roa_in_changed(void *_data)
 {
-  struct channel *c = s->data;
+  struct channel *c = _data;
   int active = !!c->reload_req.hook;
 
   CD(c, "Reload triggered by RPKI change%s", active ? " - already active" : "");
@@ -327,9 +327,9 @@ channel_roa_in_changed(struct rt_subscription *s)
 }
 
 static void
-channel_roa_out_changed(struct rt_subscription *s)
+channel_roa_out_changed(void *_data)
 {
-  struct channel *c = s->data;
+  struct channel *c = _data;
   CD(c, "Feeding triggered by RPKI change");
 
   c->refeed_pending = 1;
@@ -347,14 +347,14 @@ struct roa_subscription {
 static int
 channel_roa_is_subscribed(struct channel *c, rtable *tab, int dir)
 {
-  void (*hook)(struct rt_subscription *) =
+  void (*hook)(void *) =
     dir ? channel_roa_in_changed : channel_roa_out_changed;
 
   struct roa_subscription *s;
   node *n;
 
   WALK_LIST2(s, n, c->roa_subscriptions, roa_node)
-    if ((s->s.tab == tab) && (s->s.hook == hook))
+    if ((s->s.tab == tab) && (s->s.event->hook == hook))
       return 1;
 
   return 0;
@@ -368,9 +368,9 @@ channel_roa_subscribe(struct channel *c, rtable *tab, int dir)
     return;
 
   struct roa_subscription *s = mb_allocz(c->proto->pool, sizeof(struct roa_subscription));
+  s->s.event = ev_new_init(c->proto->pool, dir ? channel_roa_in_changed : channel_roa_out_changed, c);
+  s->s.list = proto_work_list(c->proto);
 
-  s->s.hook = dir ? channel_roa_in_changed : channel_roa_out_changed;
-  s->s.data = c;
   rt_subscribe(tab, &s->s);
 
   add_tail(&c->roa_subscriptions, &s->roa_node);
@@ -381,6 +381,7 @@ channel_roa_unsubscribe(struct roa_subscription *s)
 {
   rt_unsubscribe(&s->s);
   rem_node(&s->roa_node);
+  rfree(s->s.event);
   mb_free(s);
 }
 
diff --git a/nest/rt-table.c b/nest/rt-table.c
index d58b7298..3ade4237 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -2436,7 +2436,7 @@ rt_settle_timer(timer *t)
 
   struct rt_subscription *s;
   WALK_LIST(s, tab->subscribers)
-    s->hook(s);
+    ev_send(s->list, s->event);
 }
 
 static void
diff --git a/nest/rt.h b/nest/rt.h
index 66111dde..1a6b7a93 100644
--- a/nest/rt.h
+++ b/nest/rt.h
@@ -139,8 +139,8 @@ typedef struct rtable {
 struct rt_subscription {
   node n;
   rtable *tab;
-  void (*hook)(struct rt_subscription *b);
-  void *data;
+  event *event;
+  event_list *list;
 };
 
 struct rt_flowspec_link {