Ticket #8422: patch.diff

django/forms/fields.py

@@ -780 +780 @@
             widget=widget, label=label, initial=initial, help_text=help_text,
             *args, **kwargs)
         self.choices = []
+        if not required:
+            self.choices.append(('',''))
         if self.match is not None:
             self.match_re = re.compile(self.match)
         if recursive: