diff --git a/media/forms.py b/media/forms.py
index 673d513..b3c3775 100644
--- a/media/forms.py
+++ b/media/forms.py
@@ -103,8 +103,11 @@ class MediaAdminForm(ModelForm):
                     self.download_data_openlibrary(isbn)
 
                 if self.cleaned_data['title']:
-                    self.cleaned_data['title'] = re.sub(r'\(AUT\) ',
-                            '', self.cleaned_data['title'])
+                    self.cleaned_data['title'] = re.sub(
+                        r'\(AUT\) ',
+                        '',
+                        self.cleaned_data['title']
+                    )
 
                 if self.cleaned_data['authors']:
                     authors = self.cleaned_data['authors']
@@ -131,12 +134,18 @@ class MediaAdminForm(ModelForm):
                         title_normalized.replace(' ', ''), )
 
                     if self.cleaned_data['subtitle']:
-                        self.cleaned_data['subtitle'] = re.sub(r'</span>',
-                                '', self.cleaned_data['subtitle'])
-                        self.cleaned_data['subtitle'] = re.sub(r'<span.*>',
-                                '', self.cleaned_data['subtitle'])
+                        self.cleaned_data['subtitle'] = re.sub(
+                            r'</span>',
+                            '',
+                            self.cleaned_data['subtitle']
+                        )
+                        self.cleaned_data['subtitle'] = re.sub(
+                            r'<span.*>',
+                            '',
+                            self.cleaned_data['subtitle']
+                        )
                         start = self.cleaned_data['subtitle'].split(' ')[0] \
-                                .replace('.', '')
+                                    .replace('.', '')
 
                         if start.isnumeric():
                             side_identifier += " {:0>2}".format(start, )