diff --git a/code/controllers/subsystem/nightshift.dm b/code/controllers/subsystem/nightshift.dm
index b24a1d45e59..813cfd5012a 100644
--- a/code/controllers/subsystem/nightshift.dm
+++ b/code/controllers/subsystem/nightshift.dm
@@ -27,7 +27,9 @@ SUBSYSTEM_DEF(nightshift)
 /datum/controller/subsystem/nightshift/proc/announce(message)
 	priority_announcement.Announce(message, new_sound = 'sound/misc/notice2.ogg', new_title = "Automated Lighting System Announcement")
 
-/datum/controller/subsystem/nightshift/proc/check_nightshift()
+/datum/controller/subsystem/nightshift/proc/check_nightshift(check_canfire=FALSE)
+	if(check_canfire && !can_fire)
+		return
 	var/emergency = security_level >= SEC_LEVEL_RED
 	var/announcing = TRUE
 	var/time = station_time()
diff --git a/code/modules/security_levels/security levels.dm b/code/modules/security_levels/security levels.dm
index 48941295157..aa96b79dd01 100644
--- a/code/modules/security_levels/security levels.dm	
+++ b/code/modules/security_levels/security levels.dm	
@@ -127,7 +127,7 @@
 			atc.reroute_traffic(yes = TRUE) // Tell them fuck off we're busy.
 		else
 			atc.reroute_traffic(yes = FALSE)
-		SSnightshift.check_nightshift()
+		SSnightshift.check_nightshift(TRUE)
 
 	else
 		return