diff --git a/sphinx_conf/exclude_patterns.py b/sphinx_conf/exclude_patterns.py
index 3c5fade..3bdeafe 100644
--- a/sphinx_conf/exclude_patterns.py
+++ b/sphinx_conf/exclude_patterns.py
@@ -20,6 +20,9 @@
     'cord-tester/src',
     'cord-tester/README.md',
     'cord-tester/cord-robot/README.rst',
+    'lf',
+    'makesfiles',
+    'makefiles-orig',
     'openolt/agent/*',
     'repos',
     'requirements.txt',