diff --git a/src/network/network_internal.h b/src/network/network_internal.h
--- a/src/network/network_internal.h
+++ b/src/network/network_internal.h
@@ -94,7 +94,6 @@ extern uint8 _network_reconnect;
 extern CompanyMask _network_company_passworded;
 
 void NetworkQueryServer(const std::string &connection_string);
-void NetworkQueryLobbyServer(const std::string &connection_string);
 
 void GetBindAddresses(NetworkAddressList *addresses, uint16 port);
 struct NetworkGameList *NetworkAddServer(const std::string &connection_string, bool manually = true, bool never_expire = false);