diff --git a/src/bip.c b/src/bip.c
index 4256a8f..0729016 100644
--- a/src/bip.c
+++ b/src/bip.c
@@ -982,18 +982,20 @@ void write_user_list(connection_t *c, char *dest)
 	hash_iterator_t it;
 	list_iterator_t lit;
 	char buf[4096];
-	
+
 	WRITE_LINE2(c, P_IRCMASK, "PRIVMSG", dest, "bip user list:");
 	for (hash_it_init(&conf_users, &it); hash_it_item(&it);
 			hash_it_next(&it)) {
 		struct c_user *u = hash_it_item(&it);
 
 		snprintf(buf, 4095, "* %s:", u->name);
+		buf[4095] = 0;
 		WRITE_LINE2(c, P_IRCMASK, "PRIVMSG", dest, buf);
 		for (list_it_init(&u->connectionl, &lit); list_it_item(&lit);
 				list_it_next(&lit)) {
 			struct c_connection *con = list_it_item(&lit);
 			snprintf(buf, 4095, "  - %s", con->name);
+			buf[4095] = 0;
 			WRITE_LINE2(c, P_IRCMASK, "PRIVMSG", dest, buf);
 		}
 	}