oops

src/main/java/ch/njol/skript/effects/EffEquip.java

@@ -100,7 +100,7 @@ public boolean init(Expression<?>[] exprs, int matchedPattern, Kleenean isDelaye
 	private static ItemType BOOTS;
 	private static ItemType CARPET;
 	private static final ItemType HORSE_ARMOR = new ItemType(Material.IRON_HORSE_ARMOR, Material.GOLDEN_HORSE_ARMOR,
-		Material.DIAMOND_HORSE_ARMOR);
+		Material.DIAMOND_HORSE_ARMOR, Material.LEATHER_HORSE_ARMOR);
 	private static final ItemType SADDLE = new ItemType(Material.SADDLE);
 	private static final ItemType CHEST = new ItemType(Material.CHEST);