diff --git a/apps/participation/templates/participation/team_detail.html b/apps/participation/templates/participation/team_detail.html
index 04ccb6a..89471ab 100644
--- a/apps/participation/templates/participation/team_detail.html
+++ b/apps/participation/templates/participation/team_detail.html
@@ -70,13 +70,16 @@
                 <i class="fas fa-video"></i> {% trans "Access to team participation" %} <i class="fas fa-video"></i>
             </a>
         </div>
-    {% elif team.participation.valid is None %} {# Team did not ask for validation #}
+    {% elif team.participation.valid == None %} {# Team did not ask for validation #}
         {% if user.registration.participates %}
             {% if can_validate %}
                 <div class="alert alert-info">
                     {% trans "Your team has at least 3 members and all photo authorizations were given: the team can be validated." %}
                     <div class="text-center">
-                        <button class="btn btn-success">{% trans "Submit my team to validation" %}</button>
+                        <form method="post">
+                            {% csrf_token %}
+                            <button class="btn btn-success" name="request-validation">{% trans "Submit my team to validation" %}</button>
+                        </form>
                     </div>
                 </div>
             {% else %}
diff --git a/apps/participation/views.py b/apps/participation/views.py
index b0f5336..1989620 100644
--- a/apps/participation/views.py
+++ b/apps/participation/views.py
@@ -1,6 +1,8 @@
 from io import BytesIO
 from zipfile import ZipFile
 
+from django.shortcuts import redirect
+
 from corres2math.lists import get_sympa_client
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.core.exceptions import PermissionDenied
@@ -96,6 +98,14 @@ class TeamDetailView(LoginRequiredMixin, DetailView):
             return super().get(request, *args, **kwargs)
         raise PermissionDenied
 
+    def post(self, request, *args, **kwargs):
+        if request.user.registration.participates:
+            if "request-validation" in request.POST:
+                request.user.registration.team.participation.valid = False
+                # TODO Send mail to admins
+                request.user.registration.team.participation.save()
+        return redirect(request.path)
+
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
 
diff --git a/locale/fr/LC_MESSAGES/django.po b/locale/fr/LC_MESSAGES/django.po
index 9f785fa..ea110aa 100644
--- a/locale/fr/LC_MESSAGES/django.po
+++ b/locale/fr/LC_MESSAGES/django.po
@@ -340,7 +340,7 @@ msgstr "L'équipe n'a pas encore demandé à être validée."
 
 #: apps/participation/templates/participation/team_detail.html:95
 msgid "Your validation is pending."
-msgstr ""
+msgstr "Votre validation est en attente."
 
 #: apps/participation/templates/participation/team_detail.html:103
 msgid "Update team"