diff --git a/README b/README
index 03e68aa907665ae61a0ed80f95371f9b6d8e99ec..e1f2d7252c760d68102987f7a9c9a148289ebc75 100644
--- a/README
+++ b/README
@@ -1,7 +1,7 @@
 Travel::Status::DE::IRIS - Interface to IRIS based web departure monitors
 -------------------------------------------------------------------------
 
-* <http://finalrewind.org/projects/Travel-Status-DE-IRIS/>
+<https://finalrewind.org/projects/Travel-Status-DE-IRIS/>
 
 
 Dependencies
@@ -27,7 +27,7 @@ not wish to build it), the following drop-in replacements are available:
 * Text::Levenshtein::XS
 * Text::Levenshtein (about 10 times slower than the XS modules)
 
-To use them, simply run:
+To use them, run:
 > sed -i 's/Text::LevenshteinXS/Text::Levenshtein::XS/g' Build.PL lib/Travel/Status/DE/IRIS/Stations.pm
 or
 > sed -i 's/Text::LevenshteinXS/Text::Levenshtein/g' Build.PL lib/Travel/Status/DE/IRIS/Stations.pm
diff --git a/bin/db-iris b/bin/db-iris
index bcb78da3ef323847b83c731ddf222639d048b154..b9d556d62fe3e3efc596316fc4ad085334c2642e 100755
--- a/bin/db-iris
+++ b/bin/db-iris
@@ -220,9 +220,8 @@ sub get_station {
 sub show_help {
 	my ($code) = @_;
 
-	print 'Usage: db-iris [-r] [-c <classlist>] [-d <date>] '
-	  . '[-o <output-flags>] [-p <platforms>] [-t <time>] '
-	  . '[-T <typelist>] [-v|-V <via>] <station>' . "\n"
+	print 'Usage: db-iris [-rx] [-d <date>] [-o <output-flags>]'
+	  . '[-t <time>] [-v|-V <via>] [other options ...] <station>' . "\n"
 	  . "See also: man db-iris\n";
 
 	exit $code;
@@ -529,9 +528,8 @@ db-iris - Interface to the DeutscheBahn online departure monitor
 
 =head1 SYNOPSIS
 
-B<db-iris> [B<-r>] [B<-c> I<classlist>] [B<-d> I<date>] [B<-o> I<output-flags>]
-[B<-p> I<platforms>] [B<-t> I<time>] [B<-T> I<typelist>] [B<-v>|B<-V> I<via>]
-I<station>
+B<db-iris> [B<-rx>] [B<-d> I<date>] [B<-o> I<output-flags>]
+[B<-t> I<time>] [B<-v>|B<-V> I<via>] [I<other options ...>] I<station>
 
 =head1 VERSION
 
@@ -544,7 +542,7 @@ available at L<https://iris.noncd.db.de/wbt/js/index.html>.
 
 It requests all departures at I<station> and lists them on stdout, similar to
 the big departure screens installed at most main stations. I<station> can be
-either a DS100 station code (such as "EE"), a normal station name
+a DS100 station code (such as "EE"), a normal station name
 (such as "Essen Hbf" or "Dortmund UniversitE<auml>t"), or an IBNR / european station
 number (such as 8000098). If no exact match is found, B<db-iris> will try to
 find station names similar to I<station>.
@@ -579,7 +577,7 @@ IRIS backend, larger ones will not return data.
 
 =item B<-l>, B<--lookahead> I<int>
 
-Return only those results which are less than I<int> minutes in the future.
+Do not return results which are more than I<int> minutes in the future.
 Defaults to 240 (4 hours).
 
 Note that this is only an upper limit, not a guarantee to get every train
@@ -729,7 +727,17 @@ Show version information.
 
 =head1 EXIT STATUS
 
-Zero unless things went wrong.
+=over
+
+=item 0: Normal operation
+
+=item 1: Invalid arguments or unknown station
+
+=item 2: Cannot get departures from backend (network issues?)
+
+=item 3: Invalid date/time specified
+
+=back
 
 =head1 CONFIGURATION
 
@@ -751,16 +759,16 @@ None.
 
 =head1 BUGS AND LIMITATIONS
 
-Unknown.
+There are no known bugs at the moment.
 
 =head1 AUTHOR
 
 Copyright (C) 2013-2018 by Daniel Friesel E<lt>derf@finalrewind.orgE<gt>
 
 The station data used by this script is provided by DB
-Station&Service AG, Europaplatz 1, 10557 Berlin, Germany and also available
+Station&Service AG, Europaplatz 1, 10557 Berlin, Germany and available
 under a CC-BY 4.0 license on
-L<http://data.deutschebahn.com/dataset/data-haltestellen>.
+L<https://data.deutschebahn.com/dataset/data-haltestellen>.
 
 =head1 LICENSE