--- a/master/fsm_slave.h	Mon Dec 13 17:38:24 2010 +0100
+++ b/master/fsm_slave.h	Tue Dec 14 14:00:19 2010 +0100
@@ -67,7 +67,7 @@
 void ec_fsm_slave_init(ec_fsm_slave_t *, ec_slave_t *, ec_datagram_t *);
 void ec_fsm_slave_clear(ec_fsm_slave_t *);
 
-void ec_fsm_slave_exec(ec_fsm_slave_t *);
+int ec_fsm_slave_exec(ec_fsm_slave_t *);
 void ec_fsm_slave_ready(ec_fsm_slave_t *);
 
 /*****************************************************************************/