diff --git a/code/modules/mapfluff/ruins/objects_and_mobs/museum.dm b/code/modules/mapfluff/ruins/objects_and_mobs/museum.dm
index fc9f8d36ce0..aac22db015b 100644
--- a/code/modules/mapfluff/ruins/objects_and_mobs/museum.dm
+++ b/code/modules/mapfluff/ruins/objects_and_mobs/museum.dm
@@ -199,6 +199,6 @@
 	var/obj/structure/toilet/destination = pick(partners)
 	forceMove(destination)
 	destination.w_items += w_class
-	destination.contents += src
+	LAZYADD(destination.cistern_items, src)
 
 #undef CAFE_KEYCARD_TOILETS