diff --git a/app/models.py b/app/models.py
index 588c95d48..4f8e719c9 100644
--- a/app/models.py
+++ b/app/models.py
@@ -1337,7 +1337,7 @@ class ServiceEmailReplyTo(db.Model):
     id = db.Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
 
     service_id = db.Column(UUID(as_uuid=True), db.ForeignKey('services.id'), unique=False, index=True, nullable=False)
-    service = db.relationship(Service, backref=db.backref("reply_to_email_addresses", uselist=False))
+    service = db.relationship(Service, backref=db.backref("reply_to_email_addresses"))
 
     email_address = db.Column(db.Text, nullable=False, index=False, unique=False)
     is_default = db.Column(db.Boolean, nullable=False, default=True)
diff --git a/tests/app/service/test_rest.py b/tests/app/service/test_rest.py
index 186a5d974..15a105363 100644
--- a/tests/app/service/test_rest.py
+++ b/tests/app/service/test_rest.py
@@ -2126,7 +2126,7 @@ def test_is_service_name_unique_returns_400_when_name_does_not_exist(client):
 
 
 def test_update_service_reply_to_email_address_upserts_email_reply_to(admin_request, sample_service):
-    admin_request.post(
+    response = admin_request.post(
         'service.update_service',
         service_id=sample_service.id,
         _data={
@@ -2135,4 +2135,8 @@ def test_update_service_reply_to_email_address_upserts_email_reply_to(admin_requ
         _expected_status=200
     )
 
-    assert len(ServiceEmailReplyTo.query.all()) == 1
+    service_reply_to_emails = ServiceEmailReplyTo.query.all()
+    assert len(service_reply_to_emails) == 1
+    assert service_reply_to_emails[0].email_address == 'new@mail.com'
+    assert service_reply_to_emails[0].is_default
+    assert response['data']['reply_to_email_address'] == 'new@mail.com'