diff --git a/src/sysupdate/org.freedesktop.sysupdate1.policy b/src/sysupdate/org.freedesktop.sysupdate1.policy
index fd894793a2..8b7fa420c2 100644
--- a/src/sysupdate/org.freedesktop.sysupdate1.policy
+++ b/src/sysupdate/org.freedesktop.sysupdate1.policy
@@ -73,7 +73,7 @@
 
         <action id="org.freedesktop.sysupdate1.manage-features">
                 <description gettext-domain="systemd">Manage optional features</description>
-                <message gettext-domain="systemd">Authentication is required to manage optional features</message>
+                <message gettext-domain="systemd">Authentication is required to manage optional features.</message>
                 <defaults>
                         <allow_any>auth_admin</allow_any>
                         <allow_inactive>auth_admin</allow_inactive>