diff --git a/tests/ci/pycodestyle.sh b/tests/ci/pycodestyle.sh
index 65c0b75a1..56287ca2b 100755
--- a/tests/ci/pycodestyle.sh
+++ b/tests/ci/pycodestyle.sh
@@ -1,3 +1,3 @@
 #! /bin/sh
 
-flake8 --extend-exclude "ver_settings.py,synth_settings.py" --statistics --extend-ignore=T201,T202,B902,F821,E501,E203,E221,E261,E265,E266
+flake8 --extend-exclude "ver_settings.py,synth_settings.py,extra/" --statistics --extend-ignore=T201,T202,B902,F821,E501,E203,E221,E261,E265,E266