diff --git a/bin/hafas-m b/bin/hafas-m
index f4212dd286dd9e460f3fe6305fdf37b4b4038710..5b15117f35d10a3a0740528064e5010eba871de5 100755
--- a/bin/hafas-m
+++ b/bin/hafas-m
@@ -692,7 +692,15 @@ None.
 
 =head1 BUGS AND LIMITATIONS
 
-The non-default services (anything other than DB) are not well-tested.
+=over
+
+=item * The non-default services (anything other than DB) are not well-tested.
+
+=item * HAFAS does not provide real-time data for routes of stationboard
+entries.  Hence, B<--via> estimates the arrival time from scheduled
+departure and departure delay
+
+=back
 
 =head1 AUTHOR