diff --git a/src/main/java/org/bukkit/Tag.java b/src/main/java/org/bukkit/Tag.java
index 49fd7090..f33d9ead 100644
--- a/src/main/java/org/bukkit/Tag.java
+++ b/src/main/java/org/bukkit/Tag.java
@@ -792,11 +792,11 @@ public interface Tag<T extends Keyed> extends Keyed {
     /**
      * Vanilla item tag representing all stone tool ItemTypes.
      */
-    Tag<ItemType> ITEMS_STONE_TOOL_ItemTypeS = Bukkit.getTag(REGISTRY_ITEMS, NamespacedKey.minecraft("stone_tool_materials"), ItemType.class);
+    Tag<ItemType> ITEMS_STONE_TOOL_MATERIALS = Bukkit.getTag(REGISTRY_ITEMS, NamespacedKey.minecraft("stone_tool_materials"), ItemType.class);
     /**
      * Vanilla item tag representing all furnace ItemTypes.
      */
-    Tag<ItemType> ITEMS_FURNACE_ItemTypeS = Bukkit.getTag(REGISTRY_ITEMS, NamespacedKey.minecraft("furnace_materials"), ItemType.class);
+    Tag<ItemType> ITEMS_FURNACE_MATERIALS = Bukkit.getTag(REGISTRY_ITEMS, NamespacedKey.minecraft("furnace_materials"), ItemType.class);
     /**
      * Vanilla item tag representing all compasses.
      */
@@ -821,7 +821,7 @@ public interface Tag<T extends Keyed> extends Keyed {
     /**
      * Vanilla item tag representing all ItemTypes which can be used for trimming armor.
      */
-    Tag<ItemType> ITEMS_TRIM_ItemTypeS = Bukkit.getTag(REGISTRY_ITEMS, NamespacedKey.minecraft("trim_materials"), ItemType.class);
+    Tag<ItemType> ITEMS_TRIM_MATERIALS = Bukkit.getTag(REGISTRY_ITEMS, NamespacedKey.minecraft("trim_materials"), ItemType.class);
     /**
      * Vanilla item tag representing all trimming templates.
      */