diff --git a/src/network/network_func.h b/src/network/network_func.h
--- a/src/network/network_func.h
+++ b/src/network/network_func.h
@@ -41,6 +41,7 @@ bool NetworkClientConnectGame(const char
 void NetworkClientSendRcon(const char *password, const char *command);
 void NetworkClientSendChat(NetworkAction action, DestType type, int dest, const char *msg);
 void NetworkClientSetPassword(const char *password);
+bool NetworkClientPreferTeamChat(const NetworkClientInfo *cio);
 
 /*** Commands ran by the server ***/
 void NetworkServerMonthlyLoop();