--- a/master/master.h	Wed May 25 09:54:47 2011 +0200
+++ b/master/master.h	Fri Dec 09 10:46:04 2011 +0100
@@ -242,8 +242,8 @@
                                       ext_datagram_queue. */
 
     struct list_head external_datagram_queue; /**< External Datagram queue. */
-    unsigned int send_interval; /**< Interval between calls to
-                                  ecrt_master_send */
+    unsigned int send_interval; /**< Interval between two calls to
+                                  ecrt_master_send(). */
     size_t max_queue_size; /**< Maximum size of datagram queue */
 
     unsigned int debug_level; /**< Master debug level. */