diff --git a/tox.ini b/tox.ini
index 94065be63..93752221b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,8 +7,6 @@ envlist = py26,py27,py33,pep8
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
-         LANG=en_US.UTF-8
-         LANGUAGE=en_US:en
          OS_STDOUT_NOCAPTURE=False
          OS_STDERR_NOCAPTURE=False