diff --git a/src/frontend/app/administration/history/history-list.component.html b/src/frontend/app/administration/history/history-list.component.html
index 8d103d6779147d08139394b175c4760e3e381e14..39e39a64d35929048aa2d44de4e513eb9012597e 100644
--- a/src/frontend/app/administration/history/history-list.component.html
+++ b/src/frontend/app/administration/history/history-list.component.html
@@ -95,7 +95,6 @@
                         slot="content"
                         name="startDate"
                         pickerFormat="DD/MM/YYYY"
-                        displayFormat="DD/MM/YYYY"
                         [(ngModel)]="filters.date.start"
                         [showDefaultButtons]="true"
                         [max]="filters.date.end !== null ? filters.date.end : undefined"
@@ -119,7 +118,6 @@
                         slot="content"
                         name="endDate"
                         pickerFormat="DD/MM/YYYY"
-                        displayFormat="DD/MM/YYYY"
                         [preferWheel]="true"
                         [(ngModel)]="filters.date.end"
                         [min]="filters.date.start !== null ? filters.date.start : undefined"
diff --git a/src/frontend/app/administration/notification/notification.component.html b/src/frontend/app/administration/notification/notification.component.html
index 5f69df9e625b21e0e50a63c8e64a9ae64302649e..e1a87d047b239a0c08f6450a1c24b0d524ce9a09 100644
--- a/src/frontend/app/administration/notification/notification.component.html
+++ b/src/frontend/app/administration/notification/notification.component.html
@@ -66,7 +66,6 @@
                             slot="content"
                             name="startTime"
                             pickerFormat="HH:mm"
-                            displayFormat="HH:mm"
                             [(ngModel)]="notification.startTime" required
                             [showDefaultButtons]="true"
                             locale="fr-FR"
@@ -119,7 +118,6 @@
                         <ion-datetime
                             presentation="time"
                             pickerFormat="HH:mm"
-                            displayFormat="HH:mm"
                             slot="content"
                             name="endTime"
                             locale="fr-FR"