diff --git a/tox.ini b/tox.ini
index cad77f4..7b25238 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,7 +29,7 @@ commands =
    python setup.py build_sphinx
 
 [testenv:debug]
-commands = oslo_debug_helper {posargs}
+commands = {toxinidir}/setup-tests.sh oslo_debug_helper {posargs}
 
 [flake8]
 # E123, E125 skipped as they are invalid PEP-8.