diff --git a/chrono/manager/forms.py b/chrono/manager/forms.py
index 5a8ec2c8..5cd138f1 100644
--- a/chrono/manager/forms.py
+++ b/chrono/manager/forms.py
@@ -892,6 +892,10 @@ class TimePeriodForm(TimePeriodFormBase, forms.ModelForm):
         if self.instance.weekday_indexes:
             self.fields['repeat'].initial = 'custom'
 
+        if self.instance.agenda:  # virtual agenda exclusion period
+            del self.fields['repeat']
+            del self.fields['weekday_indexes']
+
     def save(self):
         super().save()
 
@@ -923,6 +927,11 @@ class DateTimePeriodForm(TimePeriodForm):
         fields = ['date', 'start_time', 'end_time']
 
 
+class ExcludedPeriodAddForm(TimePeriodAddForm):
+    repeat = None
+    weekday_indexes = None
+
+
 class NewDeskForm(forms.ModelForm):
     copy_from = forms.ModelChoiceField(
         label=_('Copy settings of desk'),
diff --git a/chrono/manager/views.py b/chrono/manager/views.py
index 9915968a..17990a1d 100644
--- a/chrono/manager/views.py
+++ b/chrono/manager/views.py
@@ -117,6 +117,7 @@ from .forms import (
     EventDuplicateForm,
     EventForm,
     EventsTimesheetForm,
+    ExcludedPeriodAddForm,
     ImportEventsForm,
     MeetingTypeForm,
     NewDeskForm,
@@ -2827,7 +2828,7 @@ def process_time_period_add_form(form, desk=None, agenda=None):
             weekday=weekday,
             start_time=form.cleaned_data['start_time'],
             end_time=form.cleaned_data['end_time'],
-            weekday_indexes=form.cleaned_data['weekday_indexes'],
+            weekday_indexes=form.cleaned_data.get('weekday_indexes'),
         )
         if desk:
             period.desk = desk
@@ -2858,7 +2859,7 @@ agenda_add_time_period = AgendaAddTimePeriodView.as_view()
 
 class VirtualAgendaAddTimePeriodView(ManagedAgendaMixin, FormView):
     template_name = 'chrono/manager_time_period_form.html'
-    form_class = TimePeriodAddForm
+    form_class = ExcludedPeriodAddForm
     tab_anchor = 'time-periods'
 
     def get_form_kwargs(self):
diff --git a/tests/manager/test_all.py b/tests/manager/test_all.py
index 876d5735..b636fce2 100644
--- a/tests/manager/test_all.py
+++ b/tests/manager/test_all.py
@@ -2896,6 +2896,9 @@ def test_virtual_agenda_settings_add_excluded_period(app, admin_user):
     resp = app.get('/manage/agendas/%s/settings' % agenda.pk)
     resp = resp.click('Add Excluded Period')
 
+    assert 'repeat' not in resp.form.fields
+    assert 'weekday_indexes' not in resp.form.fields
+
     resp.form.get('weekdays', index=0).checked = True
     resp.form['start_time'] = '10:00'
     resp.form['end_time'] = '17:00'
@@ -2920,6 +2923,10 @@ def test_virtual_agenda_settings_edit_excluded_period(app, admin_user):
     resp = app.get('/manage/agendas/%s/settings' % agenda.pk)
     url = '/manage/timeperiods/%s/edit' % tp.pk
     resp = resp.click(href=url)
+
+    assert 'repeat' not in resp.form.fields
+    assert 'weekday_indexes' not in resp.form.fields
+
     resp.form['start_time'] = '11:00'
     resp = resp.form.submit()
     tp = TimePeriod.objects.get(agenda=agenda)