From 4f0327dab08912b32fd23a15d4a8f79a8b003938 Mon Sep 17 00:00:00 2001
From: Mathieu Scheltienne <mathieu.scheltienne@fcbg.ch>
Date: Wed, 9 Oct 2024 21:42:16 +0200
Subject: [PATCH] fix casting

---
 mne/io/base.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mne/io/base.py b/mne/io/base.py
index b303072294a..79cbbe192ba 100644
--- a/mne/io/base.py
+++ b/mne/io/base.py
@@ -685,6 +685,8 @@ def filenames(self) -> tuple[Path | None, ...]:
     def filenames(self, value):
         """The filenames used, cast to list of paths."""  # noqa: D401
         _validate_type(value, (list, tuple), "filenames")
+        if isinstance(value, tuple):
+            value = list(value)
         for k, elt in enumerate(value):
             if elt is not None:
                 value[k] = _check_fname(elt, overwrite="read", must_exist=False)