--- a/src/Graphics/Drawable.hh	Wed Jan 21 03:33:35 2009 +0200
+++ b/src/Graphics/Drawable.hh	Wed Jan 21 23:07:22 2009 +0200
@@ -21,7 +21,7 @@
     /**
      * Draw graphics onto the given display
      */
-    virtual void draw (Display *display) = 0;
+    virtual void draw (Display &display) = 0;
 };
 
 }