diff --git a/engine/src/niftygui/com/jme3/niftygui/NiftyJmeDisplay.java b/engine/src/niftygui/com/jme3/niftygui/NiftyJmeDisplay.java
index bc6e4f007..72c529596 100644
--- a/engine/src/niftygui/com/jme3/niftygui/NiftyJmeDisplay.java
+++ b/engine/src/niftygui/com/jme3/niftygui/NiftyJmeDisplay.java
@@ -75,7 +75,7 @@ public class NiftyJmeDisplay implements SceneProcessor {
             if (info != null){
                 return info.openStream();
             }else{
-                return null;
+                throw new AssetNotFoundException(path);
             }
         }