diff --git a/app/templates/assiduites/pages/ajout_justificatif.j2 b/app/templates/assiduites/pages/ajout_justificatif.j2
index 96f933b862..e1ee013e40 100644
--- a/app/templates/assiduites/pages/ajout_justificatif.j2
+++ b/app/templates/assiduites/pages/ajout_justificatif.j2
@@ -19,7 +19,7 @@
                 <div class="justi-label">
                     <legend for="justi_date_debut" required>Date de début</legend>
                     <input type="datetime-local" name="justi_date_debut" id="justi_date_debut">
-                    <span>Journée entière</span> <input type="checkbox" name="justi_journee" id="justi_journee">
+                    <span>Journée(s) entière(s)</span> <input type="checkbox" name="justi_journee" id="justi_journee">
                 </div>
                 <div class="justi-label" id="date_fin">
                     <legend for="justi_date_fin" required>Date de fin</legend>
@@ -221,21 +221,22 @@
     function dayOnly() {
 
         if (document.getElementById('justi_journee').checked) {
-            document.getElementById("date_fin").style.display = "none";
             document.getElementById("justi_date_debut").type = "date"
+            document.getElementById("justi_date_fin").type = "date"
         } else {
-            document.getElementById("date_fin").style.display = "block";
             document.getElementById("justi_date_debut").type = "datetime-local"
+            document.getElementById("justi_date_fin").type = "datetime-local"
         }
     }
 
     function getDates() {
         if (document.getElementById('justi_journee').checked) {
-            const date_str = document.getElementById("justi_date_debut").value
+            const date_str_deb = document.getElementById("justi_date_debut").value
+            const date_str_fin = document.getElementById("justi_date_debut").value
 
             return {
-                "deb": `${date_str}T${assi_morning}`,
-                "fin": `${date_str}T${assi_evening}`,
+                "deb": `${date_str_deb}T${assi_morning}`,
+                "fin": `${date_str_fin}T${assi_evening}`,
             }
         }