diff --git a/app/templates/admin/members.html b/app/templates/admin/members.html
index e8d008f..ae9941d 100644
--- a/app/templates/admin/members.html
+++ b/app/templates/admin/members.html
@@ -35,7 +35,7 @@
 		{% for user in users %}
 			<tr><td><a href="{{ url_for('user_by_id', user_id=user.id) }}" title="Page de profil publique de {{ user.name }}">{{ user.name }}</a></td>
 					<td style="color: {{ 'red' if not user.email_confirmed else 'inherit' }};">{{ user.email }}</td>
-					<td style="text-align: center">{{ user.register_date | date('%Y-%d-%d') }}</td>
+					<td style="text-align: center">{{ user.register_date | date('%Y-%m-%d') }}</td>
 					<td>{% for g in user.groups %}
 						<span style="{{ g.css }}">{{ g.name }}</span>
 						{{ ', ' if not loop.last }}