--- a/src/proto2/NetworkObject.hh	Thu Nov 20 20:27:12 2008 +0000
+++ b/src/proto2/NetworkObject.hh	Thu Nov 20 22:10:28 2008 +0000
@@ -73,6 +73,7 @@
 
 class NetworkObject {
     friend class NetworkObjectController;
+    friend std::ostream& operator<< (std::ostream &s, const NetworkObject &obj);
 
     protected:
         NetworkObjectID obj_id;