diff --git a/code/game/gamemodes/wizard/spellbook.dm b/code/game/gamemodes/wizard/spellbook.dm
index 7af60b1d9f0..9709a89bffc 100644
--- a/code/game/gamemodes/wizard/spellbook.dm
+++ b/code/game/gamemodes/wizard/spellbook.dm
@@ -536,9 +536,9 @@
 		to_chat(user, "<span class='notice'>On second thought, maybe summoning a demon is a bad idea. You refund your points.</span>")
 
 		if(istype(O, /obj/item/antag_spawner/slaughter_demon/laughter))
-			uses+=1
+			uses += 1
 		else
-			uses+=2
+			uses += 2
 		for(var/datum/spellbook_entry/item/bloodbottle/BB in entries)
 			if(!isnull(BB.limit))
 				BB.limit++