diff --git a/billard/views.py b/billard/views.py
index 127f291..6382667 100644
--- a/billard/views.py
+++ b/billard/views.py
@@ -83,7 +83,7 @@ def accounting(request):
             'location_id': int(loc),
             'locations': locations,
             'accounting': acc,
-            'acc_ids': acc_ids,
+            'acc_ids': ','.join(str(e) for e in acc_ids),
         }
         if acc_sum['prize__sum'] is None:
             context['acc_sum'] = 0
@@ -92,6 +92,9 @@ def accounting(request):
         return render(request, template_name=template, context=context)
     if request.method == 'POST':
         loc = request.POST['location-selector']
+        if 'accountings' in request.POST:
+            acc_ids = request.POST['accountings'].split(',')
+            Accounting.objects.filter(id__in=acc_ids).update(billed=True)
         request.session['loc'] = str(loc)
         resp = redirect('accounting')
         resp['Location'] += '?loc={}'.format(str(loc))