diff --git a/docs/40_Usage/10_Backup.md b/docs/40_Usage/10_Backup.md
index d9f8b989b26ca804cb7b34d474831dcf2a66f088..1ac1abdaf2e8f4913283c877706859acaac8f295 100644
--- a/docs/40_Usage/10_Backup.md
+++ b/docs/40_Usage/10_Backup.md
@@ -1,4 +1,4 @@
-## Typical Usage
+## Description
 
 This is the main script to start a backup. The script *backup.sh* is the one to add as a cronjob. It will start
 
diff --git a/docs/40_Usage/20_Database.md b/docs/40_Usage/20_Database.md
index daf43898a4235a267500ae86c84276cdea17573a..9b931f2bb5bb9a565f6a236524310b8b8b3ef112 100644
--- a/docs/40_Usage/20_Database.md
+++ b/docs/40_Usage/20_Database.md
@@ -1,4 +1,4 @@
-## Make database dumps
+## Description
 
 To create backup database dumps without transfer of local directory to a backup target use `sudo ./localdump.sh`.
 Backup dumps will be stored as gzip files into `/var/iml-backup/[service]`.
diff --git a/docs/40_Usage/30_Filetransfer.md b/docs/40_Usage/30_Filetransfer.md
index f127b808ede2388464555388ef2db84c73898ead..5fbc0fd2071b3cec743d3dc8422e67b738fbeff3 100644
--- a/docs/40_Usage/30_Filetransfer.md
+++ b/docs/40_Usage/30_Filetransfer.md
@@ -1,4 +1,4 @@
-## Transfer files ##
+## Description
 
 To transfer local directories to a backup repository use `sudo ./transfer.sh`.
 
diff --git a/docs/40_Usage/40_Cronjob.md b/docs/40_Usage/40_Cronjob.md
index 2149ef2998be4b8fc6c79b43d6a7f8b141502a3e..4bc37416c16176b100986674093ebf119faeb59b 100644
--- a/docs/40_Usage/40_Cronjob.md
+++ b/docs/40_Usage/40_Cronjob.md
@@ -47,7 +47,9 @@ $ cat /etc/cron.d/client-backup
 
 ## Desktop notification
 
-If you don't run the backup on a server but on a client you can activate the desktop notification for a user that is logged in.
+If you don't run the backup on a server but on a client you can activate the desktop notification for a user that is logged in. It uses *notify-send* to show notification messages.
+
+In a cronjob that start the backup script as root must know the user that should get the notifications.
 Set a variable `SUPER_USER=<USERNAME>` in your cron file.
 
 Example:
@@ -57,5 +59,5 @@ $ cat /etc/cron.d/client-backup
 
 SUPER_USER=axel
 
-*/17 * * * root /usr/local/bin/cronwrapper.sh 1440 /opt/imlbackup/client/backup.sh 'iml-backup'
+17 * * * * root /usr/local/bin/cronwrapper.sh 1440 /opt/imlbackup/client/backup.sh 'iml-backup'
 ```