diff --git a/src/java/com/threerings/media/ManagedJApplet.java b/src/java/com/threerings/media/ManagedJApplet.java
index 37ad6666..560f9b45 100644
--- a/src/java/com/threerings/media/ManagedJApplet.java
+++ b/src/java/com/threerings/media/ManagedJApplet.java
@@ -36,6 +36,7 @@ import com.threerings.media.Log;
  * top-level class.
  */
 public class ManagedJApplet extends JApplet
+    implements FrameManager.ManagedRoot
 {
     // from interface FrameManager.ManagedRoot
     public void init (FrameManager fmgr)