diff --git a/horizon/static/horizon/js/horizon.forms.js b/horizon/static/horizon/js/horizon.forms.js
index 253275e036..12fe63a95b 100644
--- a/horizon/static/horizon/js/horizon.forms.js
+++ b/horizon/static/horizon/js/horizon.forms.js
@@ -523,6 +523,11 @@ horizon.addInitFunction(horizon.forms.init = function () {
             $input.attr("required", "required");
           }
         }
+        if ($input.data("required-when-shown") === true &&
+            $input.closest('.form-group').find('.hz-icon-required').length < 1) {
+          var asterist_text = '<span class="hz-icon-required fa fa-asterisk"></span>';
+          $input.closest('.form-group').children('.control-label').after(asterist_text);
+        }
       }
 
       $fieldset.find('.switched[data-switch-on*="' + slug + '"]').each(handle_switched_field);
diff --git a/openstack_dashboard/dashboards/project/instances/forms.py b/openstack_dashboard/dashboards/project/instances/forms.py
index 0b72844b17..71b7295276 100644
--- a/openstack_dashboard/dashboards/project/instances/forms.py
+++ b/openstack_dashboard/dashboards/project/instances/forms.py
@@ -307,6 +307,7 @@ class AttachInterface(forms.SelfHandlingForm):
         required=False,
         widget=forms.ThemableSelectWidget(attrs={
             'class': 'switched',
+            'data-required-when-shown': 'true',
             'data-switch-on': 'specification_method',
             'data-specification_method-network': _('Network'),
         }))