diff --git a/src/net/java/sip/communicator/service/protocol/StunServerDescriptor.java b/src/net/java/sip/communicator/service/protocol/StunServerDescriptor.java
index 07adb8039..bb2ce1883 100644
--- a/src/net/java/sip/communicator/service/protocol/StunServerDescriptor.java
+++ b/src/net/java/sip/communicator/service/protocol/StunServerDescriptor.java
@@ -12,6 +12,7 @@
 import static net.java.sip.communicator.service.protocol.ProtocolProviderFactory.STUN_PORT;
 import static net.java.sip.communicator.service.protocol.ProtocolProviderFactory.STUN_USERNAME;
 
+import java.io.*;
 import java.util.*;
 
 import org.jitsi.util.*;
@@ -27,6 +28,7 @@
  * @author Emil Ivov
  */
 public class StunServerDescriptor
+    implements Serializable
 {
     /**
      * The maximum number of stun servers that we would allow.