diff --git a/modoboa/extensions/amavis/forms.py b/modoboa/extensions/amavis/forms.py
index 03421ddb0..f655418e3 100644
--- a/modoboa/extensions/amavis/forms.py
+++ b/modoboa/extensions/amavis/forms.py
@@ -2,6 +2,7 @@
 from django.utils.translation import ugettext_lazy as _
 from django import forms
 from models import Policy, Users
+from modoboa.lib.formutils import InlineRadioSelect
 
 
 class DomainPolicyForm(forms.ModelForm):