diff --git a/Running-own-apps-in-standard-Docker-installation.md b/Running-own-apps-in-standard-Docker-installation.md
index 4b1577b..f7190f8 100644
--- a/Running-own-apps-in-standard-Docker-installation.md
+++ b/Running-own-apps-in-standard-Docker-installation.md
@@ -26,7 +26,9 @@ If you want to test EGroupware 21.1 with PHP 8.1 or run the next EGroupware vers
 
 While EGroupware's next version packages will force the deinstallation of the old egroupware-epl-* packages, you can or even have to do that for testing with PHP 8.1 yourself for now:
 ```
-apt|yum|zypper remove egroupware-epl-*
+apt|yum|zypper remove egroupware-epl-\*  # <-- you need the backslash before the asterisk!
+cd /usr/share/egroupware
+rm -rf phpgwapi etemplate sitemgr phpbrain wiki
 ```
 Then you manually have to clone the apps you want or need (no need to do that for all of them!):
 * Wiki