diff --git a/chrono/agendas/migrations/0148_agenda_minimal_booking_time.py b/chrono/agendas/migrations/0148_agenda_minimal_booking_time.py
index fedd0189..0e20e3ca 100644
--- a/chrono/agendas/migrations/0148_agenda_minimal_booking_time.py
+++ b/chrono/agendas/migrations/0148_agenda_minimal_booking_time.py
@@ -15,7 +15,11 @@ class Migration(migrations.Migration):
             model_name='agenda',
             name='minimal_booking_time',
             field=models.TimeField(
-                blank=True, default=datetime.time(0, 0), null=True, verbose_name='Minimal booking time'
+                blank=True,
+                default=datetime.time(0, 0),
+                null=True,
+                help_text='Ex.: 08:00:00. If left empty, available events will be those that are later than the current time.',
+                verbose_name='Minimal booking time',
             ),
         ),
     ]