diff --git a/tox.ini b/tox.ini
index ecb37903..212109b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,8 @@ setenv =
     BRANCH_NAME=master
     CLIENT_NAME=oslo.vmware
 install_command = {toxinidir}/tools/tox_install.sh {env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
+whitelist_externals = find
+                      rm
 deps = -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'
 
@@ -31,8 +33,11 @@ commands = python setup.py build_sphinx
 
 [testenv:cover]
 commands =
+  coverage erase
+  find . -type f -name "*.pyc" -delete
   python setup.py test --coverage --coverage-package-name=oslo_vmware --testr-args='{posargs}'
-
+  coverage report
+  
 [testenv:venv]
 commands = {posargs}