diff --git a/code/game/objects/items/storage/backpack.dm b/code/game/objects/items/storage/backpack.dm
index a867b7568c..9a94ab6297 100644
--- a/code/game/objects/items/storage/backpack.dm
+++ b/code/game/objects/items/storage/backpack.dm
@@ -70,8 +70,13 @@
 		playsound(src, 'sound/machines/buzz-sigh.ogg', 50, 0)
 	return 0
 
-/obj/item/storage/backpack/holding/handle_item_insertion(obj/item/W, prevent_warning = 0, mob/user)
+/obj/item/storage/backpack/holding/handle_item_insertion(obj/item/W, prevent_warning = 0, mob/living/user)
 	if((istype(W, /obj/item/storage/backpack/holding) || count_by_type(W.GetAllContents(), /obj/item/storage/backpack/holding)))
+		var/turf/loccheck = get_turf(src)
+		if(loccheck.z == ZLEVEL_CITYOFCOGS)
+			user.visible_message("<span class='warning'>An unseen force knocks [user] to the ground!</span>", "<span class='big_brass'>\"I think not!\"</span>")
+			user.Knockdown(60)
+			return
 		var/safety = alert(user, "Doing this will have extremely dire consequences for the station and its crew. Be sure you know what you're doing.", "Put in [name]?", "Proceed", "Abort")
 		if(safety == "Abort" || !in_range(src, user) || !src || !W || user.incapacitated())
 			return