diff --git a/src/depiction/persistence/types.py b/src/depiction/persistence/types.py
index dd897eb..39aa801 100644
--- a/src/depiction/persistence/types.py
+++ b/src/depiction/persistence/types.py
@@ -226,7 +226,8 @@ def copy_spectra(
     ) -> None:
         """Copies spectra from an existing reader. Not optimized yet.
         :param reader: The reader to copy from.
-        :param spectra_indices: The indices of the spectra to copyl.
+        :param spectra_indices: The indices of the spectra to copy.
+        :param tqdm_position: The position of the tqdm bar, if relevant.
         """
         if tqdm_position is not None: