diff --git a/Makefile b/Makefile
index e16e956cc..f7c47233f 100644
--- a/Makefile
+++ b/Makefile
@@ -241,7 +241,12 @@ check-markdown:
 check-spelling:
 	@tools/check-spelling.sh
 
-check-source: check-makefile check-source-bolt check-whitespace check-markdown check-spelling
+check-python:
+	@# E501 line too long (N > 79 characters)
+	@# E731 do not assign a lambda expression, use a def
+	@git ls-files "*.py" | xargs flake8 --ignore=E501,E731 --exclude=contrib/pylightning/lightning/__init__.py
+
+check-source: check-makefile check-source-bolt check-whitespace check-markdown check-spelling check-python
 
 full-check: check check-source