--- a/update-schlittermann-ssh-keys.pl	Wed Mar 08 01:17:24 2017 +0100
+++ b/update-schlittermann-ssh-keys.pl	Wed Mar 08 21:32:23 2017 +0100
@@ -133,7 +133,7 @@
         truncate($fh, tell($fh));
         close($fh) or rename("$SSHD_CONF.bak" => $SSHD_CONF);
 
-        system("systemctl try-reload-or-restart ssh.service || invoke-rc.d ssh reload");
+        system("systemctl try-reload-or-restart ssh.service || systemctl reload-or-try-restart ssh.service || invoke-rc.d ssh reload");
 
         exit 0;
     }