diff --git a/billard/views.py b/billard/views.py
index 13622f3..e728437 100644
--- a/billard/views.py
+++ b/billard/views.py
@@ -88,7 +88,7 @@ def account_modal_view(request, loc_pk):
     context = {
         'accounts': accounts,
         'loc_pk': loc_pk,
-        'pks': ','.join([account.pk for account in accounts]),
+        'pks': ','.join([str(account.pk) for account in accounts]),
     }
     return render(request, 'billard/accountmodal.html', context=context)