diff --git a/longs/forms.py b/longs/forms.py
index 5d22fee6..233c69cb 100755
--- a/longs/forms.py
+++ b/longs/forms.py
@@ -269,6 +269,7 @@ LongSeriesImageFormSet = inlineformset_factory(
 class ExamForm(ExamFormMixin, ModelForm):
     class Meta(ExamFormMixin.Meta):
         model = Exam
+        fields = ExamAuthorFormMixin.Meta.fields.append("double_mark")
 
 class ExamAuthorForm(ExamAuthorFormMixin):
     class Meta(ExamAuthorFormMixin.Meta):