diff --git a/code/game/objects/structures/tables_racks.dm b/code/game/objects/structures/tables_racks.dm
index c794dd811e..065c0d2f28 100644
--- a/code/game/objects/structures/tables_racks.dm
+++ b/code/game/objects/structures/tables_racks.dm
@@ -252,7 +252,7 @@
 	. = list()
 	connected_floodfill_internal(., list())
 
-/obj/structure/table/proc/connected_floodfill_internal(list/out, list/processed)
+/obj/structure/table/proc/connected_floodfill_internal(list/out = list(), list/processed = list())
 	if(processed[src])
 		return
 	processed[src] = TRUE