diff --git a/src/java/com/threerings/presents/data/InvocationMarshaller.java b/src/java/com/threerings/presents/data/InvocationMarshaller.java
index b2b140c3e..cdfaa89ec 100644
--- a/src/java/com/threerings/presents/data/InvocationMarshaller.java
+++ b/src/java/com/threerings/presents/data/InvocationMarshaller.java
@@ -1,5 +1,5 @@
 //
-// $Id: InvocationMarshaller.java,v 1.1 2002/08/14 19:07:55 mdb Exp $
+// $Id: InvocationMarshaller.java,v 1.2 2002/09/20 04:52:49 mdb Exp $
 
 package com.threerings.presents.data;
 
@@ -107,6 +107,14 @@ public class InvocationMarshaller
         _invOid = invOid;
     }
 
+    /**
+     * Returns the code assigned to this marshaller.
+     */
+    public int getInvocationCode ()
+    {
+        return _invCode;
+    }
+
     /**
      * Called by generated invocation marshaller code; packages up and
      * sends the specified invocation service request.
diff --git a/src/java/com/threerings/presents/server/InvocationManager.java b/src/java/com/threerings/presents/server/InvocationManager.java
index 262e261b1..baf3f4407 100644
--- a/src/java/com/threerings/presents/server/InvocationManager.java
+++ b/src/java/com/threerings/presents/server/InvocationManager.java
@@ -1,5 +1,5 @@
 //
-// $Id: InvocationManager.java,v 1.13 2002/09/06 01:49:23 mdb Exp $
+// $Id: InvocationManager.java,v 1.14 2002/09/20 04:52:49 mdb Exp $
 
 package com.threerings.presents.server;
 
@@ -112,6 +112,19 @@ public class InvocationManager
         return marsh;
     }
 
+    /**
+     * Clears out a dispatcher registration. This should be called to free
+     * up resources when an invocation service is no longer going to be
+     * used.
+     */
+    public void clearDispatcher (InvocationMarshaller marsh)
+    {
+        if (_dispatchers.remove(marsh.getInvocationCode()) == null) {
+            Log.warning("Requested to remove unregistered marshaller? " +
+                        "[marsh=" + marsh + "].");
+        }
+    }
+
     public void objectAvailable (DObject object)
     {
         // this must be our invocation object