diff --git a/archivebox/templates/admin/login.html b/archivebox/templates/admin/login.html
index df5fc77d..b7e6423d 100644
--- a/archivebox/templates/admin/login.html
+++ b/archivebox/templates/admin/login.html
@@ -74,7 +74,7 @@
   To create a new admin user or reset a password, run:<br/>
 <pre>
 cd data/   # run commands inside your data folder
-archivebox manage createsuperuser &lt;username&gt;
+archivebox manage createsuperuser --username &lt;username&gt;
 archivebox manage changepassword &lt;username&gt;
 </pre>
 <pre>