diff --git a/tox.ini b/tox.ini
index 5a626660..21f761db 100644
--- a/tox.ini
+++ b/tox.ini
@@ -80,6 +80,7 @@ import_exceptions = poppy.common._i18n._
 deps = -r{toxinidir}/requirements/requirements.txt
        -r{toxinidir}/tests/test-requirements.txt
 setenv = CAFE_CONFIG_FILE_PATH={homedir}/.poppy/tests.conf
+         CAFE_ENGINE_CONFIG_FILE_PATH={homedir}/.poppy/tests.conf
          CAFE_ROOT_LOG_PATH={homedir}/.poppy/logs
          CAFE_TEST_LOG_PATH={homedir}/.poppy/logs