diff --git a/tox.ini b/tox.ini
index ffba7f2ac..14655c87d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,15 +22,15 @@ setenv = OS_TEST_PATH=./kuryr/tests/fullstack
 passenv = OS_*
 
 [testenv:debug]
-commands = oslo_debug_helper {posargs}
+commands = oslo_debug_helper -t kuryr_kubernetes/tests {posargs}
 
 [testenv:debug-py27]
 basepython = python2.7
-commands = oslo_debug_helper {posargs}
+commands = oslo_debug_helper -t kuryr_kubernetes/tests {posargs}
 
 [testenv:debug-py35]
 basepython = python3.5
-commands = oslo_debug_helper {posargs}
+commands = oslo_debug_helper -t kuryr_kubernetes/tests {posargs}
 
 [testenv:pep8]
 basepython = python3