diff --git a/src/config.h b/src/config.h
index 8df752f..b8cdf8c 100644
--- a/src/config.h
+++ b/src/config.h
@@ -1,50 +1,50 @@
 /* 
  * Copyright (C) 2011 Jiaju Zhang <jjzhang@suse.de>
  * 
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  * 
  * This software is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * General Public License for more details.
  * 
  * You should have received a copy of the GNU General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
 #ifndef _CONFIG_H
 #define _CONFIG_H
 
 #include <stdint.h>
 #include "booth.h"
 #include "transport.h"
 
 #define MAX_NODES	16
 #define TICKET_ALLOC	16
 
 struct ticket_config {
 	int weight[MAX_NODES];
 	int expiry;
 	char name[BOOTH_NAME_LEN];
 };
 
 struct booth_config {
 	int node_count;
 	int ticket_count;
-	int proto;
+	transport_layer_t proto;
 	uint16_t port;
 	struct booth_node node[MAX_NODES];
 	struct ticket_config ticket[0];
 };
 
 struct booth_config *booth_conf;
 
 int read_config(const char *path);
 
 int check_config(int type);
 
 #endif /* _CONFIG_H */