Would you like some defines in these trying times?

code/modules/library/lib_items.dm

@@ -24,7 +24,7 @@
 	opacity = FALSE
 	resistance_flags = FLAMMABLE
 	max_integrity = 200
-	armor = list("melee" = 0, "bullet" = 0, "laser" = 0, "energy" = 0, "bomb" = 0, "bio" = 0, "rad" = 0, "fire" = 50, "acid" = 0)
+	armor = list(MELEE = 0, BULLET = 0, LASER = 0, ENERGY = 0, BOMB = 0, BIO = 0, RAD = 0, FIRE = 50, ACID = 0)
 	var/state = BOOKCASE_UNANCHORED
 	/// When enabled, books_to_load number of random books will be generated for this bookcase when first interacted with.
 	var/load_random_books = FALSE