diff --git a/gnu/packages/xfce.scm b/gnu/packages/xfce.scm
index c13bf58a59..cdb0c8adcd 100644
--- a/gnu/packages/xfce.scm
+++ b/gnu/packages/xfce.scm
@@ -990,6 +990,7 @@ on your desktop.")
        ("gnome-icon-theme"     ,gnome-icon-theme)
        ("gtk-xfce-engine"      ,gtk-xfce-engine)
        ("hicolor-icon-theme"   ,hicolor-icon-theme)
+       ("mate-polkit-for-xfce" ,mate-polkit-for-xfce)
        ("ristretto"            ,ristretto)
        ("shared-mime-info"     ,shared-mime-info)
        ("thunar"               ,thunar)