diff --git a/tox.ini b/tox.ini
index 91895e59de52..dad00b1bb22d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -30,7 +30,7 @@ deps =
     Sphinx
 
 [pep8]
-exclude = gcloud/datastore/datastore_v1_pb2.py,.*/,docs/conf.py
+exclude = gcloud/datastore/datastore_v1_pb2.py,docs/conf.py,*.egg/,.*/
 verbose = 1
 
 [testenv:lint]