diff --git a/gnu/services/xorg.scm b/gnu/services/xorg.scm
index dc2625d39b..7fea6829d5 100644
--- a/gnu/services/xorg.scm
+++ b/gnu/services/xorg.scm
@@ -43,6 +43,8 @@
             xorg-start-command
             %default-slim-theme
             %default-slim-theme-name
+            slim-configuration
+            slim-service-type
             slim-service
 
             screen-locker-service-type