diff --git a/tools/ci/check_build_test_rules.py b/tools/ci/check_build_test_rules.py
index aa61aea67a..7f24243150 100755
--- a/tools/ci/check_build_test_rules.py
+++ b/tools/ci/check_build_test_rules.py
@@ -433,7 +433,8 @@ if __name__ == '__main__':
 
         if check_all:
             check_dirs = {IDF_PATH}
-            _exclude_dirs = [os.path.join(IDF_PATH, 'tools', 'unit-test-app')]
+            _exclude_dirs = [os.path.join(IDF_PATH, 'tools', 'unit-test-app'),
+                             os.path.join(IDF_PATH, 'tools', 'test_build_system', 'build_test_app')]
         else:
             _exclude_dirs = []