diff --git a/commentaries/forms.py b/commentaries/forms.py
index 22632aafe7c5a939b6704e2c6fb51af4cbac3e6a..77b60567194416ee5d2a612fc8acf7bec71f8c3a 100644
--- a/commentaries/forms.py
+++ b/commentaries/forms.py
@@ -71,7 +71,7 @@ class RequestCommentaryForm(forms.ModelForm):
 
     def save(self, *args, **kwargs):
         """Prefill instance before save"""
-        self.requested_by = Contributor.objects.get(user=self.user)
+        self.instance.requested_by = Contributor.objects.get(user=self.user)
         return super(RequestCommentaryForm, self).save(*args, **kwargs)
 
     def get_existing_commentary(self):