diff --git a/jme3-core/src/main/java/com/jme3/material/Materials.java b/jme3-core/src/main/java/com/jme3/material/Materials.java
index 8ddc7b75d3..0b0003323e 100644
--- a/jme3-core/src/main/java/com/jme3/material/Materials.java
+++ b/jme3-core/src/main/java/com/jme3/material/Materials.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009-2021 jMonkeyEngine
+ * Copyright (c) 2009-2025 jMonkeyEngine
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -38,13 +38,17 @@
  */
 public class Materials {
 
-    public static final String UNSHADED = "Common/MatDefs/Misc/Unshaded.j3md";
-    public static final String LIGHTING = "Common/MatDefs/Light/Lighting.j3md";
-    public static final String PBR = "Common/MatDefs/Light/PBRLighting.j3md";
+    public static final String SHOW_NORMALS = "Common/MatDefs/Misc/ShowNormals.j3md";
+    public static final String UNSHADED     = "Common/MatDefs/Misc/Unshaded.j3md";
+    public static final String LIGHTING     = "Common/MatDefs/Light/Lighting.j3md";
+    public static final String PBR          = "Common/MatDefs/Light/PBRLighting.j3md";
+    public static final String PARTICLE     = "Common/MatDefs/Misc/Particle.j3md";
+    public static final String BILLBOARD    = "Common/MatDefs/Misc/Billboard.j3md";
+    public static final String GUI          = "Common/MatDefs/Gui/Gui.j3md";
 
     /**
      * A private constructor to inhibit instantiation of this class.
      */
     private Materials() {
     }
-}
\ No newline at end of file
+}