diff --git a/tox.ini b/tox.ini
index 24a8d1d..8c91717 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,10 @@ setenv =
    VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-commands = /bin/bash run_tests.sh -N --no-pep8 {posargs}
+commands = 
+    find . -type f -name "*.pyc" -delete
+    /bin/bash run_tests.sh -N --no-pep8 {posargs}
+whitelist_externals = find
 
 [testenv:py27]
 setenv = DJANGO_SETTINGS_MODULE=mistraldashboard.test.settings