diff --git a/mkdocs/docs/HPC/crontab.md b/mkdocs/docs/HPC/crontab.md
index d259f52fb609..8916fcdcd1e9 100644
--- a/mkdocs/docs/HPC/crontab.md
+++ b/mkdocs/docs/HPC/crontab.md
@@ -22,6 +22,9 @@ running the command:
 <pre><code>$ <b>crontab -e</b>
 </code></pre>
 
+!!! Warning
+    During maintenance it is possible that your crontab will be wiped. It is recommended to have a back-up of the content in your crontab.
+
 #### Example cron job script
 
 <pre><code> 15 5 * * * ~/runscript.sh >& ~/job.out