diff --git a/tryton/gui/window/view_form/view/form_gtk/selection.py b/tryton/gui/window/view_form/view/form_gtk/selection.py
index 6c6cddfcdf..bd7fd5dd7c 100644
--- a/tryton/gui/window/view_form/view/form_gtk/selection.py
+++ b/tryton/gui/window/view_form/view/form_gtk/selection.py
@@ -5,7 +5,6 @@ import gobject
 from interface import WidgetInterface
 import tryton.rpc as rpc
 import tryton.common as common
-from tryton.pyson import PYSONDecoder
 
 
 class Selection(WidgetInterface):