diff --git a/20.1--Installation-using-egroupware-docker-RPM-DEB-package.md b/20.1--Installation-using-egroupware-docker-RPM-DEB-package.md
index 0f5892c..4535ccd 100644
--- a/20.1--Installation-using-egroupware-docker-RPM-DEB-package.md
+++ b/20.1--Installation-using-egroupware-docker-RPM-DEB-package.md
@@ -18,8 +18,7 @@ sudo sh -c "echo 'deb http://download.opensuse.org/repositories/server:/eGroupWa
 
 sudo apt-get install gnupg # required for Debian 10 to use apt-key add
 
-wget -nv https://download.opensuse.org/repositories/server:eGroupWare/xUbuntu_20.04/Release.key -O - | \
-   sudo apt-key add -
+wget -nv https://download.opensuse.org/repositories/server:eGroupWare/xUbuntu_20.04/Release.key -O - | sudo apt-key add -
 
 apt update
 ```