diff --git a/tox.ini b/tox.ini
index 79466f3..927b9be 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,7 @@ python =
 
 [flake8]
 ignore = E124,W504
-exclude = .svn,CVS,.bzr,.hg,.git,__pycache__,.tox,.eggs,*.egg,src
+exclude = .svn,CVS,.bzr,.hg,.git,__pycache__,.tox,.eggs,*.egg,src,tests/tutor-sandbox/env
 
 [testenv]
 setenv =