diff --git a/app/static/js/assiduites.js b/app/static/js/assiduites.js
index 1074308bb..93f98ba4c 100644
--- a/app/static/js/assiduites.js
+++ b/app/static/js/assiduites.js
@@ -720,7 +720,57 @@ function setupDate(onchange = null) {
 
   //Initialisation du datepicker
   // sinon on ne peut pas le mettre à jour
-  $(input).datepicker();
+  $(input).datepicker({
+    showOn: "button",
+    buttonImage: "/ScoDoc/static/icons/calendar_img.png",
+    buttonImageOnly: true,
+    dateFormat: "dd/mm/yy",
+    duration: "fast",
+    firstDay: 1, // Start with Monday
+    dayNames: [
+      "Dimanche",
+      "Lundi",
+      "Mardi",
+      "Mercredi",
+      "Jeudi",
+      "Vendredi",
+      "Samedi",
+    ],
+    dayNamesMin: ["Di", "Lu", "Ma", "Me", "Je", "Ve", "Sa"],
+    dayNamesShort: ["Dim", "Lun", "Mar", "Mer", "Jeu", "Ven", "Sam"],
+    monthNames: [
+      "Janvier",
+      "Février",
+      "Mars",
+      "Avril",
+      "May",
+      "Juin",
+      "Juilet",
+      "Août",
+      "Septembre",
+      "Octobre",
+      "Novembre",
+      "Décembre",
+    ],
+    monthNamesShort: [
+      "Jan",
+      "Fév",
+      "Mar",
+      "Avr",
+      "Mai",
+      "Juin",
+      "Juil",
+      "Aoû",
+      "Sep",
+      "Oct",
+      "Nov",
+      "Déc",
+    ],
+  });
+  $(input).datepicker(
+    "option",
+    $.extend({ showMonthAfterYear: false }, $.datepicker.regional["fr"])
+  );
 
   if (onchange != null) {
     $(input).change(onchange);
diff --git a/app/templates/assiduites/pages/signal_assiduites_group.j2 b/app/templates/assiduites/pages/signal_assiduites_group.j2
index 1d66a3c37..12380afaa 100644
--- a/app/templates/assiduites/pages/signal_assiduites_group.j2
+++ b/app/templates/assiduites/pages/signal_assiduites_group.j2
@@ -102,7 +102,7 @@
             <div class="infos-button">Groupes&nbsp;: {{grp|safe}}</div>
             <div class="infos-button" style="margin-left: 24px;">Date&nbsp;: <span style="margin-left: 8px;"
                     id="datestr"></span>
-                <input type="text" class="datepicker" name="tl_date" id="tl_date" value="{{ date }}"
+                <input type="text" name="tl_date" id="tl_date" value="{{ date }}"
                     onchange="updateDate()">
             </div>
         </div>