diff --git a/views/admin.qtpl b/views/admin.qtpl
index 2b77e49..6854f0a 100644
--- a/views/admin.qtpl
+++ b/views/admin.qtpl
@@ -60,7 +60,13 @@
 				<a href="/hypha/{%u cfg.UserHypha %}/{%u u.Name %}">{%s u.Name %}</a>
 			</td>
 			<td>{%s u.Group %}</td>
-			<td>{%s u.RegisteredAt.UTC().Format("2006-01-02 15:04") %}</td>
+			<td>
+				{% if u.RegisteredAt.IsZero() %}
+					unknown
+				{% else %}
+					{%s u.RegisteredAt.UTC().Format("2006-01-02 15:04") %}
+				{% endif %}
+			</td>
 			<td>
 				<a href="/admin/users/{%u u.Name %}/edit">Edit</a>
 			</td>
diff --git a/views/admin.qtpl.go b/views/admin.qtpl.go
index 17c4c65..fc30b2b 100644
--- a/views/admin.qtpl.go
+++ b/views/admin.qtpl.go
@@ -136,68 +136,86 @@ func StreamAdminUsersPanelHTML(qw422016 *qt422016.Writer, userList []*user.User)
 		qw422016.E().S(u.Group)
 //line views/admin.qtpl:62
 		qw422016.N().S(`</td>
-			<td>`)
-//line views/admin.qtpl:63
-		qw422016.E().S(u.RegisteredAt.UTC().Format("2006-01-02 15:04"))
-//line views/admin.qtpl:63
-		qw422016.N().S(`</td>
+			<td>
+				`)
+//line views/admin.qtpl:64
+		if u.RegisteredAt.IsZero() {
+//line views/admin.qtpl:64
+			qw422016.N().S(`
+					unknown
+				`)
+//line views/admin.qtpl:66
+		} else {
+//line views/admin.qtpl:66
+			qw422016.N().S(`
+					`)
+//line views/admin.qtpl:67
+			qw422016.E().S(u.RegisteredAt.UTC().Format("2006-01-02 15:04"))
+//line views/admin.qtpl:67
+			qw422016.N().S(`
+				`)
+//line views/admin.qtpl:68
+		}
+//line views/admin.qtpl:68
+		qw422016.N().S(`
+			</td>
 			<td>
 				<a href="/admin/users/`)
-//line views/admin.qtpl:65
+//line views/admin.qtpl:71
 		qw422016.N().U(u.Name)
-//line views/admin.qtpl:65
+//line views/admin.qtpl:71
 		qw422016.N().S(`/edit">Edit</a>
 			</td>
 		</tr>
 	`)
-//line views/admin.qtpl:68
+//line views/admin.qtpl:74
 	}
-//line views/admin.qtpl:68
+//line views/admin.qtpl:74
 	qw422016.N().S(`
 	</tbody>
 	</table>
 </main>
 </div>
 `)
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 }
 
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 func WriteAdminUsersPanelHTML(qq422016 qtio422016.Writer, userList []*user.User) {
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	StreamAdminUsersPanelHTML(qw422016, userList)
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	qt422016.ReleaseWriter(qw422016)
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 }
 
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 func AdminUsersPanelHTML(userList []*user.User) string {
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	WriteAdminUsersPanelHTML(qb422016, userList)
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	qs422016 := string(qb422016.B)
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 	return qs422016
-//line views/admin.qtpl:73
+//line views/admin.qtpl:79
 }
 
-//line views/admin.qtpl:75
+//line views/admin.qtpl:81
 func StreamAdminUsersUserHTML(qw422016 *qt422016.Writer, u *user.User) {
-//line views/admin.qtpl:75
+//line views/admin.qtpl:81
 	qw422016.N().S(`
 <div class="layout">
 <main class="main-width">
 	<h1>`)
-//line views/admin.qtpl:78
+//line views/admin.qtpl:84
 	qw422016.E().S(u.Name)
-//line views/admin.qtpl:78
+//line views/admin.qtpl:84
 	qw422016.N().S(`</h1>
 
 	<form action="" method="post">
@@ -205,49 +223,49 @@ func StreamAdminUsersUserHTML(qw422016 *qt422016.Writer, u *user.User) {
 			<label for="group">Group:</label>
 			<select id="group" name="group">
 				<option`)
-//line views/admin.qtpl:84
+//line views/admin.qtpl:90
 	if u.Group == "anon" {
-//line views/admin.qtpl:84
+//line views/admin.qtpl:90
 		qw422016.N().S(` selected`)
-//line views/admin.qtpl:84
+//line views/admin.qtpl:90
 	}
-//line views/admin.qtpl:84
+//line views/admin.qtpl:90
 	qw422016.N().S(`>anon</option>
 				<option`)
-//line views/admin.qtpl:85
+//line views/admin.qtpl:91
 	if u.Group == "editor" {
-//line views/admin.qtpl:85
+//line views/admin.qtpl:91
 		qw422016.N().S(` selected`)
-//line views/admin.qtpl:85
+//line views/admin.qtpl:91
 	}
-//line views/admin.qtpl:85
+//line views/admin.qtpl:91
 	qw422016.N().S(`>editor</option>
 				<option`)
-//line views/admin.qtpl:86
+//line views/admin.qtpl:92
 	if u.Group == "trusted" {
-//line views/admin.qtpl:86
+//line views/admin.qtpl:92
 		qw422016.N().S(` selected`)
-//line views/admin.qtpl:86
+//line views/admin.qtpl:92
 	}
-//line views/admin.qtpl:86
+//line views/admin.qtpl:92
 	qw422016.N().S(`>trusted</option>
 				<option`)
-//line views/admin.qtpl:87
+//line views/admin.qtpl:93
 	if u.Group == "moderator" {
-//line views/admin.qtpl:87
+//line views/admin.qtpl:93
 		qw422016.N().S(` selected`)
-//line views/admin.qtpl:87
+//line views/admin.qtpl:93
 	}
-//line views/admin.qtpl:87
+//line views/admin.qtpl:93
 	qw422016.N().S(`>moderator</option>
 				<option`)
-//line views/admin.qtpl:88
+//line views/admin.qtpl:94
 	if u.Group == "admin" {
-//line views/admin.qtpl:88
+//line views/admin.qtpl:94
 		qw422016.N().S(` selected`)
-//line views/admin.qtpl:88
+//line views/admin.qtpl:94
 	}
-//line views/admin.qtpl:88
+//line views/admin.qtpl:94
 	qw422016.N().S(`>admin</option>
 			</select>
 		</div>
@@ -258,31 +276,31 @@ func StreamAdminUsersUserHTML(qw422016 *qt422016.Writer, u *user.User) {
 </main>
 </div>
 `)
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 }
 
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 func WriteAdminUsersUserHTML(qq422016 qtio422016.Writer, u *user.User) {
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	qw422016 := qt422016.AcquireWriter(qq422016)
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	StreamAdminUsersUserHTML(qw422016, u)
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	qt422016.ReleaseWriter(qw422016)
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 }
 
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 func AdminUsersUserHTML(u *user.User) string {
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	qb422016 := qt422016.AcquireByteBuffer()
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	WriteAdminUsersUserHTML(qb422016, u)
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	qs422016 := string(qb422016.B)
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	qt422016.ReleaseByteBuffer(qb422016)
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 	return qs422016
-//line views/admin.qtpl:97
+//line views/admin.qtpl:103
 }