diff --git a/source/3/3.1/3.1.9/sddm_configuration.rst b/source/3/3.1/3.1.9/sddm_configuration.rst
index 3dfdee8f..f5c0753e 100644
--- a/source/3/3.1/3.1.9/sddm_configuration.rst
+++ b/source/3/3.1/3.1.9/sddm_configuration.rst
@@ -4,4 +4,9 @@ Chapter 3.1.9 SDDM configuration
 Sddm is the display manager that shows up when you first log in to Lubuntu or logout or choose to another session. This has no graphical application to do this. 
 
 
+Useage
+------
+To test your sddm configuration and make sure it is a valid one so you can log in run 
 
+.. code:: 
+   sddm-greeter --test-mode