diff --git a/mne/utils/mixin.py b/mne/utils/mixin.py
index bf2b9f6b7a1..e62b2a57a6a 100644
--- a/mne/utils/mixin.py
+++ b/mne/utils/mixin.py
@@ -213,9 +213,7 @@ def _getitem(
                 if isinstance(reason, str):
                     reason = (reason,)
                 reason = tuple(reason)
-                for i, idx in enumerate(
-                    np.setdiff1d(inst.selection, key_selection)
-                ):
+                for i, idx in enumerate(np.setdiff1d(inst.selection, key_selection)):
                     drop_log[idx] = reason
             inst.drop_log = tuple(drop_log)
             inst.selection = key_selection