IntegrityError: duplicate key value violates unique constraint "dashboard_app_testcase_test_id_5adbcd0c920afd4d_uniq"

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/dashboard_app/models.py", line 394, in deserialize
    self._do_deserialize(prefer_evolution)
  File "/usr/lib/pymodules/python2.7/dashboard_app/models.py", line 412, in _do_deserialize
    helper.deserialize(self, prefer_evolution)
  File "/usr/lib/pymodules/python2.7/dashboard_app/helpers.py", line 737, in deserialize
    importer().import_document(s_bundle, doc)
  File "/usr/lib/pymodules/python2.7/dashboard_app/helpers.py", line 64, in import_document
    self._import_document_with_transaction(s_bundle, doc)
  File "/usr/lib/pymodules/python2.7/django/db/transaction.py", line 299, in _commit_on_success
    res = func(*args, **kw)
  File "/usr/lib/pymodules/python2.7/dashboard_app/helpers.py", line 106, in _import_document_with_transaction
    self._import_document(s_bundle, doc)
  File "/usr/lib/pymodules/python2.7/dashboard_app/helpers.py", line 110, in _import_document
    self._import_test_run(c_test_run, s_bundle)
  File "/usr/lib/pymodules/python2.7/dashboard_app/helpers.py", line 152, in _import_test_run
    self._import_test_results(c_test_run, s_test_run)
  File "/usr/lib/pymodules/python2.7/dashboard_app/helpers.py", line 385, in _import_test_results
    self._import_test_cases_pgsql(c_test_results, s_test_run.test)
  File "/usr/lib/pymodules/python2.7/dashboard_app/helpers.py", line 465, in _import_test_cases_pgsql
    """ % (s_test.id, s_test.id))
  File "/usr/lib/pymodules/python2.7/django/db/backends/postgresql_psycopg2/base.py", line 44, in execute
    return self.cursor.execute(query, args)
IntegrityError: duplicate key value violates unique constraint "dashboard_app_testcase_test_id_5adbcd0c920afd4d_uniq"

It seems to happen if I submit a result where I have 2 results with the same test_case_id