diff --git a/expobanner/forms.py b/expobanner/forms.py
index a4d2a757..fa3b8801 100644
--- a/expobanner/forms.py
+++ b/expobanner/forms.py
@@ -229,7 +229,7 @@ class BasePaidUpdateForm(forms.ModelForm):
         fields = ['logo', 'organiser', 'public']
 
     def save(self, commit=True):
-        paid = super(PaidUpdateForm, self).save(commit=False)
+        paid = super(BasePaidUpdateForm, self).save(commit=False)
         if commit:
             tickets = self.cleaned_data['tickets']
             b_tickets = paid.tickets