diff --git a/gestioncof/widgets.py b/gestioncof/widgets.py
index e41ed3e7..4c864e38 100644
--- a/gestioncof/widgets.py
+++ b/gestioncof/widgets.py
@@ -1,5 +1,5 @@
 from django.forms.widgets import Widget
-from django.forms.util import flatatt
+from django.forms.utils import flatatt
 from django.utils.safestring import mark_safe
 
 class TriStateCheckbox(Widget):