diff --git a/.gitignore b/.gitignore
index 0e664c7bf..fdb23b7b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ TAGS
 build
 .coverage
 .tox
+cover
diff --git a/run_tests.sh b/run_tests.sh
index a86519ad7..c15c227f8 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -1,4 +1,6 @@
 #!/bin/sh
 # Simple test runner, should be replaced with tox
 
+rm -rf cover
 nosetests -P -d -v --with-coverage --cover-package=ceilometer --cover-inclusive tests
+tox -e pep8