diff --git a/user_manual/files/versioncontrol.rst b/user_manual/files/versioncontrol.rst
index 779c689b9..18d348689 100644
--- a/user_manual/files/versioncontrol.rst
+++ b/user_manual/files/versioncontrol.rst
@@ -7,3 +7,21 @@ via the history tab. This tab also links to the history page, where you
 can roll back a file to any previous version. Changes made at intervals
 greater than two minutes are saved in data/[user]/versions, and made
 accessible using the above pages.
+
+
+The versioning app expires old versions automatically to make sure that
+the user doesn't run out of space. Following pattern is used to delete
+old versions:
+
+* For the first 10 seconds ownCloud keeps one version every 2 seconds
+* For the first hour ownCloud keeps one version every minute
+* For the first 24 hours ownCloud keeps one version every hour
+* For the first 30 days ownCloud keeps one version every day
+* After the first 30 days ownCloud keeps one version every week
+
+The versions are adjusted along this pattern every time a new version gets
+created.
+
+Beside that the version app takes care to never use more that 50% of your
+currently available free space. If your versions exceed this limit ownCloud
+delete the oldest versions until it meets the memory usage limit again.