diff --git a/tmpfiles.d/systemd.conf b/tmpfiles.d/systemd.conf
index c397c71b754..b6304401fe4 100644
--- a/tmpfiles.d/systemd.conf
+++ b/tmpfiles.d/systemd.conf
@@ -22,7 +22,7 @@ d /run/systemd/users 0755 root root -
 d /run/systemd/machines 0755 root root -
 d /run/systemd/shutdown 0755 root root -
 
-F /run/nologin 0644 - - - "System is booting up."
+F /run/nologin 0644 - - - "System is booting up. See pam_nologin(8)"
 
 m /var/log/journal 2755 root systemd-journal - -
 m /var/log/journal/%m 2755 root systemd-journal - -