Uppercases slot defines.

code/modules/paperwork/clipboard.dm

@@ -9,7 +9,7 @@
 	throw_range = 7
 	var/obj/item/pen/haspen		//The stored pen.
 	var/obj/item/paper/toppaper	//The topmost piece of paper.
-	slot_flags = SLOT_BELT
+	slot_flags = ITEM_SLOT_BELT
 	resistance_flags = FLAMMABLE
 
 /obj/item/clipboard/suicide_act(mob/living/carbon/user)

code/modules/paperwork/paper.dm

@@ -16,7 +16,7 @@
 	throw_range = 1
 	throw_speed = 1
 	pressure_resistance = 0
-	slot_flags = SLOT_HEAD
+	slot_flags = ITEM_SLOT_HEAD
 	body_parts_covered = HEAD
 	resistance_flags = FLAMMABLE
 	max_integrity = 50

code/modules/paperwork/pen.dm

@@ -16,7 +16,7 @@
 	icon = 'icons/obj/bureaucracy.dmi'
 	icon_state = "pen"
 	item_state = "pen"
-	slot_flags = SLOT_BELT | SLOT_EARS
+	slot_flags = ITEM_SLOT_BELT | ITEM_SLOT_EARS
 	throwforce = 0
 	w_class = WEIGHT_CLASS_TINY
 	throw_speed = 3

code/modules/paperwork/photocopier.dm

@@ -138,7 +138,7 @@
 		else if(ass) //ASS COPY. By Miauw
 			for(var/i = 0, i < copies, i++)
 				var/icon/temp_img
-				if(ishuman(ass) && (ass.get_item_by_slot(slot_w_uniform) || ass.get_item_by_slot(slot_wear_suit)))
+				if(ishuman(ass) && (ass.get_item_by_slot(SLOT_W_UNIFORM) || ass.get_item_by_slot(SLOT_WEAR_SUIT)))
 					to_chat(usr, "<span class='notice'>You feel kind of silly, copying [ass == usr ? "your" : ass][ass == usr ? "" : "\'s"] ass with [ass == usr ? "your" : "their"] clothes on.</span>" )
 					break
 				else if(toner >= 5 && !busy && check_ass()) //You have to be sitting on the copier and either be a xeno or a human without clothes on.
@@ -345,7 +345,7 @@
 		updateUsrDialog()
 		return 0
 	else if(ishuman(ass))
-		if(!ass.get_item_by_slot(slot_w_uniform) && !ass.get_item_by_slot(slot_wear_suit))
+		if(!ass.get_item_by_slot(SLOT_W_UNIFORM) && !ass.get_item_by_slot(SLOT_WEAR_SUIT))
 			return 1
 		else
 			return 0

code/modules/paperwork/photography.dm

@@ -130,7 +130,7 @@
 	righthand_file = 'icons/mob/inhands/misc/devices_righthand.dmi'
 	w_class = WEIGHT_CLASS_SMALL
 	flags_1 = CONDUCT_1
-	slot_flags = SLOT_BELT
+	slot_flags = ITEM_SLOT_BELT
 	materials = list(MAT_METAL = 50, MAT_GLASS = 150)
 	var/pictures_max = 10
 	var/pictures_left = 10