--- a/QTfrontend/game.h	Tue Sep 04 12:16:36 2012 +0400
+++ b/QTfrontend/game.h	Tue Sep 04 12:25:55 2012 +0400
@@ -111,8 +111,8 @@
         void SendCampaignConfig();
         void ParseMessage(const QByteArray & msg);
         void SetGameState(GameState state);
-        void sendCampaignVar(QByteArray varToSend);
-        void writeCampaignVar(QByteArray varVal);
+        void sendCampaignVar(const QByteArray & varToSend);
+        void writeCampaignVar(const QByteArray &varVal);
 };
 
 #endif