diff --git a/app/views/admin/surveys/_form.html.haml b/app/views/admin/surveys/_form.html.haml
index ef35538f..b03022ab 100644
--- a/app/views/admin/surveys/_form.html.haml
+++ b/app/views/admin/surveys/_form.html.haml
@@ -22,7 +22,7 @@
         = f.select :target, Survey.targets.keys, class: 'form-control'
       .form-group
         = f.label :start_date
-        = f.text_field :start_date, class: 'datetimepicker', class: 'form-control'
+        = f.text_field :start_date, class: 'datetimepicker form-control'
         = f.label :end_date
-        = f.text_field :end_date, class: 'datetimepicker', class: 'form-control'
+        = f.text_field :end_date, class: 'datetimepicker form-control'
       = f.submit nil, class: 'btn btn-primary'