diff --git a/tox.ini b/tox.ini
index f0be6bd..6f10ae8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -13,19 +13,19 @@ commands = py.test {posargs}
 basepython = python2.7
 deps =
     flake8
-commands = flake8 {posargs} betamax
+commands = flake8 {posargs} src/betamax
 
 [testenv:py37-flake8]
 basepython = python3.7
 deps =
     flake8
-commands = flake8 {posargs} betamax
+commands = flake8 {posargs} src/betamax
 
 [testenv:docstrings]
 deps =
     flake8
     flake8-docstrings
-commands = flake8 {posargs} betamax
+commands = flake8 {posargs} src/betamax
 
 [testenv:release]
 deps =