diff --git a/py-polars/polars/utils/various.py b/py-polars/polars/utils/various.py
index 1c5960e1e803..0b65b4962324 100644
--- a/py-polars/polars/utils/various.py
+++ b/py-polars/polars/utils/various.py
@@ -187,8 +187,8 @@ def normalise_filepath(path: str | Path, check_not_directory: bool = True) -> st
     path = os.path.expanduser(path)  # noqa: PTH111
     if (
         check_not_directory
-        and os.path.exists(path)
-        and os.path.isdir(path)  # noqa: PTH110 PTH112
+        and os.path.exists(path)  # noqa: PTH110
+        and os.path.isdir(path)  # noqa: PTH112
     ):
         raise IsADirectoryError(f"Expected a file path; {path!r} is a directory")
     return path