diff --git a/.gitignore b/.gitignore
index 55a0adf56194a5da123e12518420d1316c05ede2..53bd95ca6cc8cbe07ca0a6490f355aa2d7419813 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,3 +10,4 @@ dist/
 __pycache__/
 *.log
 .tox
+.cache
diff --git a/MANIFEST.in b/MANIFEST.in
index 6b42c144b8529bdf514513b4f09f14515c4e0bc6..9620571617add34c60bad977105bb8c3f09343df 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,2 +1,2 @@
 recursive-include unshare
-exclude .pre-commit-config.yaml
+exclude .pre-commit-config.yaml Makefile
diff --git a/tests/basic_assertions.py b/tests/basic_assertions.py
index 7f2cca96f906295230fdcff3a444e4f201f36e93..27c0a73889e9ad637c22422b06b8a32212b514f5 100755
--- a/tests/basic_assertions.py
+++ b/tests/basic_assertions.py
@@ -1,8 +1,8 @@
 import unshare
 
+
 def import_assestions():
     for macro in 'CLONE_NEWUTS', 'MS_SHARED':
         assert macro in dir(unshare)
-    
     for function in 'clone', 'pivot_root':
         assert function in dir(unshare)
diff --git a/tox.ini b/tox.ini
index ce80bcbe4874ca6cae6cbfb0cf8a198427fcb10c..06479f01a9bffa2cf31cc61201b5013e1f076b21 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,3 +1,7 @@
+[flake8]
+ignore=F403
+exclude = .tox,*.egg,build,data,unshare/constants.py
+
 [tox]
 envlist = py{27,35}
 
@@ -15,8 +19,3 @@ commands =
     {py27,py35}: python setup.py check -m -r -s
     flake8 .
     py.test tests
-
-[flake8]
-ignore=F403
-exclude = .tox,*.egg,build,data,unshare/constants.py
-select = E,W,F