diff --git a/code/game/gamemodes/clock_cult/clock_cult.dm b/code/game/gamemodes/clock_cult/clock_cult.dm
index 261a258101..462daefd86 100644
--- a/code/game/gamemodes/clock_cult/clock_cult.dm
+++ b/code/game/gamemodes/clock_cult/clock_cult.dm
@@ -183,6 +183,12 @@ Credit where due:
 		return TRUE
 	return FALSE
 
+/datum/game_mode/clockwork_cult/check_finished()
+	var/obj/structure/destructible/clockwork/massive/celestial_gateway/G = GLOB.ark_of_the_clockwork_justiciar
+	if(G && !GLOB.ratvar_awakens) // Doesn't end until the Ark is destroyed or completed
+		return FALSE
+	. = ..()
+
 /datum/game_mode/clockwork_cult/proc/check_clockwork_victory()
 	if(GLOB.clockwork_gateway_activated || SSshuttle.emergency.mode == SHUTTLE_ESCAPE)
 		SSticker.news_report = CLOCK_SUMMON