diff --git a/setup.cfg b/setup.cfg
index 8b2e35193ce..a3791cb4f83 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,2 @@
 [flake8]
-exclude=.git,components/bioformats,components/blitz/generated,components/tools/**/build,components/**/target,components/tools/OmeroPy/src/omero_ext,*pytest-*,dist,docs/sphinx,docs/sphinx-api,target
+exclude=.git,components/bioformats,components/blitz/generated,components/tools/**/build,components/**/target,components/tools/OmeroCpp/ext,components/tools/OmeroPy/src/omero_ext,*pytest-*,dist,docs/sphinx,docs/sphinx-api,target