diff --git a/media/forms.py b/media/forms.py
index e3a7589..7bd1056 100644
--- a/media/forms.py
+++ b/media/forms.py
@@ -99,7 +99,7 @@ class MediaAdminForm(ModelForm):
                     self.download_data_openlibrary(isbn)
 
                 if self.cleaned_data['authors']:
-                    authors: list = self.cleaned_data['authors']
+                    authors = self.cleaned_data['authors']
                     def sort(author):
                         return str(-author.note) + "." + author.name
                     authors.sort(key=sort)