diff --git a/network_server.h b/network_server.h
--- a/network_server.h
+++ b/network_server.h
@@ -4,17 +4,17 @@
 #ifdef ENABLE_NETWORK
 
 DEF_SERVER_SEND_COMMAND(PACKET_SERVER_MAP);
-DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_ERROR_QUIT)(ClientState *cs, uint16 client_index, NetworkErrorCode errorno);
-DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_ERROR)(ClientState *cs, NetworkErrorCode error);
+DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_ERROR_QUIT)(NetworkClientState *cs, uint16 client_index, NetworkErrorCode errorno);
+DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_ERROR)(NetworkClientState *cs, NetworkErrorCode error);
 DEF_SERVER_SEND_COMMAND(PACKET_SERVER_SHUTDOWN);
 DEF_SERVER_SEND_COMMAND(PACKET_SERVER_NEWGAME);
 
 bool NetworkFindName(char new_name[NETWORK_NAME_LENGTH]);
 void NetworkServer_HandleChat(NetworkAction action, DestType desttype, int dest, const char *msg, byte from_index);
 
-bool NetworkServer_ReadPackets(ClientState *cs);
-void NetworkServer_Tick();
-void NetworkServerMonthlyLoop();
+bool NetworkServer_ReadPackets(NetworkClientState *cs);
+void NetworkServer_Tick(void);
+void NetworkServerMonthlyLoop(void);
 
 #endif /* ENABLE_NETWORK */