diff --git a/src/java/com/threerings/media/animation/AnimatedPanel.java b/src/java/com/threerings/media/animation/AnimatedPanel.java
index b6e64ef77..274b52ade 100644
--- a/src/java/com/threerings/media/animation/AnimatedPanel.java
+++ b/src/java/com/threerings/media/animation/AnimatedPanel.java
@@ -1,5 +1,5 @@
 //
-// $Id: AnimatedPanel.java,v 1.13 2002/02/19 05:03:17 mdb Exp $
+// $Id: AnimatedPanel.java,v 1.14 2002/02/19 07:19:04 mdb Exp $
 
 package com.threerings.media.animation;
 
@@ -136,6 +136,15 @@ public class AnimatedPanel extends Canvas implements AnimatedView
         paint(g);
     }
 
+    // documentation inherited
+    public void validate ()
+    {
+        super.validate();
+
+        // if we change size, clear out our old back buffer
+        _backimg = null;
+    }
+
     // documentation inherited
     public void paintImmediately (List invalidRects)
     {