diff --git a/templates/main/header.html.twig b/templates/main/header.html.twig
index c005059..be9b74e 100644
--- a/templates/main/header.html.twig
+++ b/templates/main/header.html.twig
@@ -24,7 +24,9 @@
             </button>
             <ul id="navbar" class="hidden absolute top-12 right-0 w-48 bg-white shadow-md p-4 flex-col space-y-4">
                 <li><a href="{{ path('home') }}" class="text-gray-700 font-bold hover:text-blue-500">Accueil</a></li>
-                <li><a href="{{ path('profile_view', {'uuid': app.user.idParticipant}) }}" class="text-gray-700 font-bold hover:text-blue-500">Mon profile</a></li>
+                {% if app.user %}
+                    <li><a href="{{ path('profile_view', {'uuid': app.user.idParticipant}) }}" class="text-gray-700 font-bold hover:text-blue-500">Mon profile</a></li>
+                {% endif %}
                 <li><a href="{{ path('home') }}" class="text-gray-700 font-bold hover:text-blue-500">ToDo</a></li>
                 <li><a href="{{ path('home') }}" class="text-gray-700 font-bold hover:text-blue-500">À propos</a></li>
                 {% if app.user %}