diff --git a/conf/dokuwiki.php b/conf/dokuwiki.php
index e6a19e60b690b7482b2b4f109ebcf27db2ade656..0a0d5c84a70de3ec5cc16b6e1becfd9c356e6e68 100644
--- a/conf/dokuwiki.php
+++ b/conf/dokuwiki.php
@@ -104,7 +104,7 @@ $conf['im_convert']  = '';               //path to ImageMagicks convert (will be
 $conf['jpg_quality'] = '70';             //quality of compression when scaling jpg images (0-100)
 $conf['subscribers'] = 0;                //enable change notice subscription support
 $conf['subscribe_time'] = 24 * 60 * 60;  //Time after which digests / lists are sent (in sec, default 1 day)
-                                         //Should be larger than the time specified in recent_days
+                                         //Should be smaller than the time specified in recent_days
 $conf['compress']    = 1;                //Strip whitespaces and comments from Styles and JavaScript? 1|0
 $conf['hidepages']   = '';               //Regexp for pages to be skipped from RSS, Search and Recent Changes
 $conf['send404']     = 0;                //Send a HTTP 404 status for non existing pages?
diff --git a/lib/exe/indexer.php b/lib/exe/indexer.php
index 84eb9d48214a50b95db182dde153b31442eb9493..35aa1beef6e1cf484386da662e3d0713a11fb492 100644
--- a/lib/exe/indexer.php
+++ b/lib/exe/indexer.php
@@ -365,7 +365,8 @@ function sendDigest() {
             list($user, $style, $lastupdate) = $data;
             $lastupdate = (int) $lastupdate;
             if ($lastupdate + $conf['subscribe_interval'] > time()) {
-                // Less than a day passed since last update.
+                // Less than the configured time period passed since last
+                // update.
                 continue;
             }
 
diff --git a/lib/plugins/config/lang/de/lang.php b/lib/plugins/config/lang/de/lang.php
index 2cb44ab179f2b6f2674358b582a119610eb8fbe8..2075322d2f1f3fe9348eb66a1ea2d92c68dd0b35 100644
--- a/lib/plugins/config/lang/de/lang.php
+++ b/lib/plugins/config/lang/de/lang.php
@@ -114,7 +114,7 @@ $lang['gdlib']                 = 'GD Lib Version';
 $lang['im_convert']            = 'Pfad zu ImageMagicks Konvertierwerkzeug';
 $lang['jpg_quality']           = 'JPEG Kompressionsqualität (0-100)';
 $lang['subscribers']           = 'E-Mail-Abos zulassen';
-$lang['subscribe_time']        = 'Zeit nach der Zusammenfassungs- und Änderungslisten-E-Mails verschickt werden; Dieser Wert sollte größer als recent_days sein.';
+$lang['subscribe_time']        = 'Zeit nach der Zusammenfassungs- und Änderungslisten-E-Mails verschickt werden; Dieser Wert sollte kleiner als die in recent_days konfigurierte Zeit sein.';
 $lang['compress']              = 'JavaScript und Stylesheets komprimieren';
 $lang['hidepages']             = 'Seiten verstecken (Regulärer Ausdruck)';
 $lang['send404']               = 'Bei nicht vorhandenen Seiten mit 404 Fehlercode antworten';
diff --git a/lib/plugins/config/lang/en/lang.php b/lib/plugins/config/lang/en/lang.php
index cad1a0aad174bdf5f860d0180b7313cebf47111e..7198ca36d97bce73c7d4966f4523dc7dd05ab299 100644
--- a/lib/plugins/config/lang/en/lang.php
+++ b/lib/plugins/config/lang/en/lang.php
@@ -129,7 +129,7 @@ $lang['gdlib']       = 'GD Lib version';
 $lang['im_convert']  = 'Path to ImageMagick\'s convert tool';
 $lang['jpg_quality'] = 'JPG compression quality (0-100)';
 $lang['subscribers'] = 'Enable page subscription support';
-$lang['subscribe_time'] = 'Time after which subscription lists and digests are sent (sec); This should be larger than the time specified in recent_days.';
+$lang['subscribe_time'] = 'Time after which subscription lists and digests are sent (sec); This should be smaller than the time specified in recent_days.';
 $lang['compress']    = 'Compact CSS and javascript output';
 $lang['hidepages']   = 'Hide matching pages (regular expressions)';
 $lang['send404']     = 'Send "HTTP 404/Page Not Found" for non existing pages';