diff --git a/app/templates/support-tickets/support-ticket.txt b/app/templates/support-tickets/support-ticket.txt
index 109699bab..08fd2629d 100644
--- a/app/templates/support-tickets/support-ticket.txt
+++ b/app/templates/support-tickets/support-ticket.txt
@@ -1,5 +1,5 @@
 {{ content }}
 {% if current_service -%}
 Service: "{{ current_service.name }}"
-{{ url_for('main.service_dashboard', service_id=current_service.id) }}
+{{ url_for('main.service_dashboard', service_id=current_service.id, _external=True) }}
 {% endif %}
diff --git a/tests/app/main/views/test_feedback.py b/tests/app/main/views/test_feedback.py
index 4606461d2..8f73087ca 100644
--- a/tests/app/main/views/test_feedback.py
+++ b/tests/app/main/views/test_feedback.py
@@ -237,6 +237,7 @@ def test_passes_user_details_through_flow(
         url_for(
             'main.service_dashboard',
             service_id=SERVICE_ONE_ID,
+            _external=True,
         ),
         ''
     ])