Quote the armor lists

code/game/objects/items/defib.dm

@@ -14,7 +14,7 @@
 	throwforce = 6
 	w_class = WEIGHT_CLASS_BULKY
 	actions_types = list(/datum/action/item_action/toggle_paddles)
-	armor = list(melee = 0, bullet = 0, laser = 0, energy = 0, bomb = 0, bio = 0, rad = 0, fire = 50, acid = 50)
+	armor = list("melee" = 0, "bullet" = 0, "laser" = 0, "energy" = 0, "bomb" = 0, "bio" = 0, "rad" = 0, "fire" = 50, "acid" = 50)
 
 	var/on = FALSE //if the paddles are equipped (1) or on the defib (0)
 	var/safety = TRUE //if you can zap people with the defibs on harm mode