diff --git a/code/datums/components/crafting/craft.dm b/code/datums/components/crafting/craft.dm
index 4e6d396409..b5c7f34c27 100644
--- a/code/datums/components/crafting/craft.dm
+++ b/code/datums/components/crafting/craft.dm
@@ -133,7 +133,10 @@
 	for(var/obj/item/I in get_environment(user))
 		if(I.flags_1 & HOLOGRAM_1)
 			continue
-		.["instances"][I.type] += I
+		if(.["instances"][I.type])
+			.["instances"][I.type] += I
+		else
+			.["instances"][I.type] = list(I)
 		if(istype(I, /obj/item/stack))
 			var/obj/item/stack/S = I
 			.["other"][I.type] += S.amount