diff --git a/script/clang-tidy b/script/clang-tidy
index b5905e0e4e..934c454655 100755
--- a/script/clang-tidy
+++ b/script/clang-tidy
@@ -121,6 +121,8 @@ def clang_options(idedata):
                 )
             )
             or (directory.startswith(f"{root_path}") and "/.pio/" in directory)
+            or "/.platformio/"
+            in directory  # Also treat any .platformio directory as system
         ):
             cmd.extend(["-isystem", directory])