diff --git a/RIGS/forms.py b/RIGS/forms.py
index 6e344b45..fa1a682f 100644
--- a/RIGS/forms.py
+++ b/RIGS/forms.py
@@ -89,4 +89,4 @@ class EventForm(forms.ModelForm):
         model = models.Event
         fields = ['is_rig', 'name', 'venue', 'start_date', 'start_time', 'end_date',
                   'end_time', 'meet_at', 'access_at', 'description', 'notes', 'mic',
-                  'person', 'organisation', 'dry_hire', 'based_on', 'checked_in_by', 'status']
\ No newline at end of file
+                  'person', 'organisation', 'dry_hire', 'checked_in_by', 'status']
\ No newline at end of file
diff --git a/RIGS/rigboard.py b/RIGS/rigboard.py
index 737b7dc9..0cea5165 100644
--- a/RIGS/rigboard.py
+++ b/RIGS/rigboard.py
@@ -107,6 +107,7 @@ class EventDuplicate(generic.RedirectView):
     def get_redirect_url(self, *args, **kwargs):
         new = get_object_or_404(models.Event, pk=kwargs['pk'])
         new.pk = None
+        new.based_on = models.Event.objects.get(pk=kwargs['pk'])
         new.save()
 
         old = get_object_or_404(models.Event, pk=kwargs['pk'])