diff --git a/tox.ini b/tox.ini
index e7bff42..3a7933b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,6 @@ django_find_project = false
 
 [testenv]
 set_env =
-    VIRTUALENV_DISCOVERY = pyenv
     PYTHONPATH = {toxinidir}
 deps =
     mock