diff --git a/.travis.yml b/.travis.yml
index 0c0ae4389..4831b8e7d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -50,6 +50,7 @@ before_script:
 script:
   - on_host do_on linux bitcoind --help | head -1
   - on_host do_on linux ./test/run_tests.sh
+  - on_host do_on linux flake8 jmbase jmbitcoin jmclient jmdaemon scripts test
   - on_docker ./test/Dockerfiles/build_docker.sh
 after_success:
   - on_docker echo "Success !"
diff --git a/requirements-dev.txt b/requirements-dev.txt
index f3174ec70..bc12d0115 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,4 +6,4 @@ pytest
 pytest-cov
 python-coveralls
 mock
-
+flake8
diff --git a/setup.cfg b/setup.cfg
index 93eaf3966..5f090bc8c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,3 +1,24 @@
 # content of pytest.ini
 [tool:pytest]
 testpaths = jmbitcoin jmclient jmbase jmdaemon test
+
+[flake8]
+exclude =
+    # defaults
+    .svn,CVS,.bzr,.hg,.git,__pycache__,.tox,
+    # lots of "unused imports"
+    __init__.py,
+    # unmaintained
+    jmclient/jmclient/slowaes.py
+
+# default value, keep?
+max-line-length = 79
+
+statistics = True
+max-complexity = 15
+
+# should be extended once existing issues are fixed
+select = F,E9,W6
+
+# those cause many errors, need to be fixed eventually
+ignore = F403,F405,F841