diff -r 8b358effa78b -r 4cf0161c445a master/fsm_slave_scan.c
--- a/master/fsm_slave_scan.c	Mon Mar 14 11:20:05 2011 +0100
+++ b/master/fsm_slave_scan.c	Mon Mar 14 16:57:47 2011 +0100
@@ -137,8 +137,8 @@
 
 int ec_fsm_slave_scan_exec(ec_fsm_slave_scan_t *fsm /**< slave state machine */)
 {
-    if (fsm->datagram->state == EC_DATAGRAM_SENT
-        || fsm->datagram->state == EC_DATAGRAM_QUEUED) {
+    if (fsm->datagram->state == EC_DATAGRAM_QUEUED
+        || fsm->datagram->state == EC_DATAGRAM_SENT) {
         // datagram was not sent or received yet.
         return ec_fsm_slave_scan_running(fsm);
     }