diff --git a/fet2020/finance/forms.py b/fet2020/finance/forms.py
index 1d63fdb0..72459e87 100644
--- a/fet2020/finance/forms.py
+++ b/fet2020/finance/forms.py
@@ -320,8 +320,8 @@ class BillAdminForm(forms.ModelForm):
             .filter(num_bills__lt=8)
         )
 
-        # delete wiref id from if there is a uploaded wiref file.
-        qs = qs.filter(file_field="")
+        # delete wiref id from if status is not opened.
+        qs = qs.filter(status=Wiref.Status.OPENED)
 
         self.fields["wiref"].queryset = qs.order_by("-wiref_id")