diff --git a/code/game/objects/effects/spawners/lootdrop.dm b/code/game/objects/effects/spawners/lootdrop.dm
index 8cfe84f644..0e543a3642 100644
--- a/code/game/objects/effects/spawners/lootdrop.dm
+++ b/code/game/objects/effects/spawners/lootdrop.dm
@@ -224,8 +224,7 @@
 		var/obj/item/storage/box/mre/M = A
 		var/our_chance = initial(M.spawner_chance)
 		if(our_chance)
-			loot += M
-			loot[M] = our_chance
+			LAZYSET(loot, M, our_chance)
 	return ..()