diff --git a/code/modules/modular_computers/computers/_modular_computer_shared.dm b/code/modules/modular_computers/computers/_modular_computer_shared.dm
index f0583a9af14..77888fdf01b 100644
--- a/code/modules/modular_computers/computers/_modular_computer_shared.dm
+++ b/code/modules/modular_computers/computers/_modular_computer_shared.dm
@@ -47,9 +47,9 @@
 	var/obj/item/computer_hardware/card_slot/card_slot2 = get_modular_computer_part(MC_CARD2)
 	var/multiple_slots = istype(card_slot) && istype(card_slot2)
 	if(card_slot)
-		if(card_slot.stored_card || card_slot2.stored_card)
-			var/obj/item/card/id/first_ID = card_slot.stored_card
-			var/obj/item/card/id/second_ID = card_slot2.stored_card
+		if(card_slot?.stored_card || card_slot2?.stored_card)
+			var/obj/item/card/id/first_ID = card_slot?.stored_card
+			var/obj/item/card/id/second_ID = card_slot2?.stored_card
 			var/multiple_cards = istype(first_ID) && istype(second_ID)
 			if(user_is_adjacent)
 				. += "It has [multiple_slots ? "two slots" : "a slot"] for identification cards installed[multiple_cards ? " which contain [first_ID] and [second_ID]" : ", one of which contains [first_ID ? first_ID : second_ID]"]."