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
@@ -86,6 +86,9 @@ extern uint32 _network_join_bytes_total;
 extern ConnectionType _network_server_connection_type;
 extern std::string _network_server_invite_code;
 
+/* Variable available for clients. */
+extern std::string _network_server_name;
+
 extern uint8 _network_reconnect;
 
 extern CompanyMask _network_company_passworded;