Index: /trunk/autoquest-generic-event-monitor/src/main/java/de/ugoe/cs/autoquest/genericeventmonitor/GenericEventMonitorServlet.java
===================================================================
--- /trunk/autoquest-generic-event-monitor/src/main/java/de/ugoe/cs/autoquest/genericeventmonitor/GenericEventMonitorServlet.java	(revision 2243)
+++ /trunk/autoquest-generic-event-monitor/src/main/java/de/ugoe/cs/autoquest/genericeventmonitor/GenericEventMonitorServlet.java	(revision 2244)
@@ -59,10 +59,10 @@
      * the map of event target ids to the concrete target objects.
      */
-    private Map<String, GenericEventTarget> eventTargets = new HashMap<>();
+    private transient Map<String, GenericEventTarget> eventTargets = new HashMap<>();
 
     /**
      * the message listener to forward received messages to.
      */
-    private GenericEventMonitorMessageListener messageListener;
+    private transient GenericEventMonitorMessageListener messageListener;
 
     /**