diff --git a/python/nav/web/templates/alertprofiles/subscription_form.html b/python/nav/web/templates/alertprofiles/subscription_form.html
index dd6ba3d899..d1608d27ae 100644
--- a/python/nav/web/templates/alertprofiles/subscription_form.html
+++ b/python/nav/web/templates/alertprofiles/subscription_form.html
@@ -44,8 +44,9 @@ <h4>
                 <td><a href="{% url 'alertprofiles-filter_groups-detail' s.filter_group.id %}">{{ s.filter_group.name }}</a></td>
                 <td>
                     {% if not s.alert_address.type.supported %}<div class="alert-box error with-icon inside-table" title="{{ s.alert_address.type.name }} is no longer supported">{% endif %}
+                    {% if s.alert_address.type.blacklisted_reason %}<div class="alert-box warning inside-table" title="{{ s.alert_address.type.name }} is blacklisted: {{ s.alert_address.type.blacklisted_reason }}">{% endif %}
                     <a href="{% url 'alertprofiles-address-detail' s.alert_address.id %}">{{ s.alert_address }}</a>
-                    {% if not s.alert_address.type.supported %}</div>{% endif %}
+                    {% if not s.alert_address.type.supported or s.alert_address.type.blacklisted_reason %}</div>{% endif %}
                 </td>
                 <td>{{ s.get_type_display|capfirst }}</td>
                 <td>{{ s.ignore_resolved_alerts|yesno:"Yes,No" }}</td>