diff --git a/include/ircd/m/rooms.h b/include/ircd/m/rooms.h
index 507bed8cd..34d0eb777 100644
--- a/include/ircd/m/rooms.h
+++ b/include/ircd/m/rooms.h
@@ -44,4 +44,5 @@ namespace ircd::m::rooms
 	json::object summary_chunk(const m::room &, const mutable_buffer &out);
 	event::id::buf summary_set(const m::room::id &, const json::object &summary);
 	event::id::buf summary_set(const m::room &);
+	event::id::buf summary_del(const m::room &);
 }
diff --git a/ircd/m.cc b/ircd/m.cc
index 557e214a5..483b1998b 100644
--- a/ircd/m.cc
+++ b/ircd/m.cc
@@ -2160,6 +2160,19 @@ ircd::m::event_filter::event_filter(const mutable_buffer &buf,
 // m/rooms.h
 //
 
+ircd::m::event::id::buf
+ircd::m::rooms::summary_del(const m::room &r)
+{
+	using prototype = event::id::buf (const m::room &);
+
+	static mods::import<prototype> call
+	{
+		"m_rooms", "ircd::m::rooms::summary_del"
+	};
+
+	return call(r);
+}
+
 ircd::m::event::id::buf
 ircd::m::rooms::summary_set(const m::room &room)
 {
diff --git a/modules/m_rooms.cc b/modules/m_rooms.cc
index 117a19b2a..424baee07 100644
--- a/modules/m_rooms.cc
+++ b/modules/m_rooms.cc
@@ -398,6 +398,25 @@ ircd::m::rooms::_fetch_update_(const net::hostport &hp,
 	};
 }
 
+ircd::m::event::id::buf
+IRCD_MODULE_EXPORT
+ircd::m::rooms::summary_del(const m::room &room)
+{
+	char state_key_buf[m::event::STATE_KEY_MAX_SIZE];
+	const m::room::state state{public_room_id};
+	const m::event::idx &event_idx
+	{
+		state.get("ircd.rooms", make_state_key(state_key_buf, room.room_id))
+	};
+
+	const m::event::id::buf event_id
+	{
+		m::event_id(event_idx)
+	};
+
+	return redact(public_room_id, m::me, event_id, "delisted");
+}
+
 ircd::m::event::id::buf
 ircd::m::rooms::_summary_set(const m::room::id &room_id,
                              const json::object &summary)