diff --git a/onadata/apps/api/tests/viewsets/test_xform_submission_viewset.py b/onadata/apps/api/tests/viewsets/test_xform_submission_viewset.py
index e8d49ed0a4..fbe5916012 100644
--- a/onadata/apps/api/tests/viewsets/test_xform_submission_viewset.py
+++ b/onadata/apps/api/tests/viewsets/test_xform_submission_viewset.py
@@ -1274,7 +1274,7 @@ def test_post_submission_using_project_pk_exceptions(self):
                 auth = DigestAuth("bob", "bobbob")
                 request.META.update(auth(request.META, response))
                 response = self.view(request, project_pk=f"{self.project.pk}hello")
-                self.assertEqual(response.status_code, 400)
+                self.assertContains(response, "Invalid Project id.", status_code=400)
                 self.assertTrue(response.has_header("X-OpenRosa-Version"))
                 self.assertTrue(response.has_header("X-OpenRosa-Accept-Content-Length"))
                 self.assertTrue(response.has_header("Date"))