diff --git a/sbas/forms.py b/sbas/forms.py
index 99e75249..bbb41f41 100755
--- a/sbas/forms.py
+++ b/sbas/forms.py
@@ -19,7 +19,7 @@ from django.forms.widgets import RadioSelect, TextInput, Textarea
 
 
 class CidUserAnswerForm(ModelForm):
-    answer = CharField(label=False)
+    answer = ChoiceField(label=False)
     class Meta:
         model = CidUserAnswer
         fields = ["answer"]