diff --git a/gnu/services/desktop.scm b/gnu/services/desktop.scm
index 578095b146..f31dbc112e 100644
--- a/gnu/services/desktop.scm
+++ b/gnu/services/desktop.scm
@@ -103,6 +103,8 @@ (define-module (gnu services desktop)
             accountsservice-service-type
             accountsservice-service
 
+            cups-pk-helper-service-type
+
             gnome-desktop-configuration
             gnome-desktop-configuration?
             gnome-desktop-service