diff --git a/README.md b/README.md
index fa369a6..bd4e782 100644
--- a/README.md
+++ b/README.md
@@ -33,4 +33,24 @@ Set the the theme which lightdm-webkit2-greeter should use in **/etc/lightdm/lig
 webkit_theme        = c3c
 ```
 
-c3c is the foldername. 
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+c3c is the foldername. 
+
+If you use a different dm, like GDM from gnome, disable this service 
+
+```
+systemctl stop gdm
+systemctl disable gdm
+```
+
+and start lightdm
+
+```
+systemctl start lightdm
+```
+
+if all works fine and you can login, enable lightdm
+
+
+```
+systemctl enable lightdm
+```
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