diff --git a/code/game/objects/structures/crates_lockers/closets/cardboardbox.dm b/code/game/objects/structures/crates_lockers/closets/cardboardbox.dm
index 1a0edaa8719..9ac66a11fe9 100644
--- a/code/game/objects/structures/crates_lockers/closets/cardboardbox.dm
+++ b/code/game/objects/structures/crates_lockers/closets/cardboardbox.dm
@@ -9,6 +9,7 @@
 	can_weld_shut = 0
 	cutting_tool = /obj/item/wirecutters
 	material_drop = /obj/item/stack/sheet/cardboard
+	custom_materials = list(/datum/material/cardboard = SHEET_MATERIAL_AMOUNT * 4)
 	delivery_icon = "deliverybox"
 	anchorable = FALSE
 	open_sound = 'sound/machines/cardboard_box.ogg'
@@ -19,7 +20,6 @@
 	door_anim_time = 0 // no animation
 	can_install_electronics = FALSE
 	paint_jobs = null
-	custom_materials = list(/datum/material/cardboard = SHEET_MATERIAL_AMOUNT * 4)
 	/// Cooldown controlling when the box can trigger the Metal Gear Solid-style '!' alert.
 	COOLDOWN_DECLARE(alert_cooldown)
 
diff --git a/code/game/objects/structures/crates_lockers/crates/cardboard.dm b/code/game/objects/structures/crates_lockers/crates/cardboard.dm
index 1544bb2e0a4..a2bd5f6450e 100644
--- a/code/game/objects/structures/crates_lockers/crates/cardboard.dm
+++ b/code/game/objects/structures/crates_lockers/crates/cardboard.dm
@@ -4,6 +4,7 @@
 	pass_flags_self = PASSSTRUCTURE
 	material_drop = /obj/item/stack/sheet/cardboard
 	material_drop_amount = 4
+	custom_materials = list(/datum/material/cardboard = SHEET_MATERIAL_AMOUNT * 4)
 	icon_state = "cardboard"
 	base_icon_state = "cardboard"
 	open_sound = 'sound/items/poster/poster_ripped.ogg'