diff --git a/tests/alerters/thehive_test.py b/tests/alerters/thehive_test.py
index bbf73de2..e954588d 100644
--- a/tests/alerters/thehive_test.py
+++ b/tests/alerters/thehive_test.py
@@ -97,6 +97,8 @@ def test_thehive_alerter(caplog):
     actual_data = json.loads(mock_post_request.call_args_list[0][1]['data'])
     # The date and sourceRef are autogenerated, so we can't expect them to be a particular value
     del actual_data['date']
+
+    assert len(actual_data['sourceRef']) == 36
     del actual_data['sourceRef']
 
     assert expected_data == actual_data