diff --git a/src/c3nav/editor/forms.py b/src/c3nav/editor/forms.py
index 239e7a7c..9339b791 100644
--- a/src/c3nav/editor/forms.py
+++ b/src/c3nav/editor/forms.py
@@ -187,7 +187,8 @@ class EditorFormBase(I18nModelFormMixin, ModelForm):
         self.add_redirect_slugs = None
         self.remove_redirect_slugs = None
         if 'slug' in self.fields:
-            self.redirect_slugs = sorted(self.instance.redirects.values_list('slug', flat=True))
+            self.redirect_slugs = (sorted(self.instance.redirects.values_list('slug', flat=True))
+                                   if self.instance.pk else [])
             self.fields['redirect_slugs'] = CharField(label=_('Redirecting Slugs (comma separated)'), required=False,
                                                       initial=','.join(self.redirect_slugs))
             self.fields.move_to_end('redirect_slugs', last=False)