diff --git a/tox.ini b/tox.ini
index 04c4c87..e0d8d90 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,9 +3,6 @@ envlist = py26,py27,pep8
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
-         LANG=en_US.UTF-8
-         LANGUAGE=en_US:en
-         LC_ALL=C
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'