Index: src/routes/auth.js
===================================================================
--- src/routes/auth.js	(revision 434ba41da181445d9dd2c3d197b724f2f1089d68)
+++ src/routes/auth.js	(revision 952baf39d4219c186a0428025fb689aec377f7f5)
@@ -115,4 +115,5 @@
   if (!isSetupMode()) return res.redirect('/auth/login' + (next ? '?next=' + encodeURIComponent(next) : ''));
   renderPage(req, res, 'pages/auth-register', {
+    pageJs: 'auth-register',
     pageTitle: t(resolveLang(req), 'setup.title'), bodyClass: 'on-special',
     error: null, username: '', email: '', siteName: '', next,
@@ -124,4 +125,5 @@
   const next = safeNext(req.body.next) || '';
   const renderErr = (error) => renderPage(req, res, 'pages/auth-register', {
+    pageJs: 'auth-register',
     pageTitle: t(resolveLang(req), 'setup.title'), bodyClass: 'on-special',
     error, username: username || '', email: email || '', siteName: siteName || '', next,