diff --git a/frontend/src/view/FreeRooms.vue b/frontend/src/view/FreeRooms.vue
index fb7a28e..2cb1ff6 100644
--- a/frontend/src/view/FreeRooms.vue
+++ b/frontend/src/view/FreeRooms.vue
@@ -27,7 +27,7 @@
               type="time"
               placeholder="start"
               time-only
-              hourFormat="24"
+              hour-format="24"
               date-format="HH:mm"
               :class="[{'p-invalid':isLater}, flexSpecs]"
               panel-class="min-w-min"
@@ -37,7 +37,7 @@
               v-model="end"
               type="time"
               time-only
-              hourFormat="24"
+              hour-format="24"
               placeholder="end"
               date-format="HH:mm"
               :class="[{'p-invalid':isLater}, flexSpecs]"