diff --git a/tryton/tryton/gui/window/view_form/view/form_gtk/many2one.py b/tryton/tryton/gui/window/view_form/view/form_gtk/many2one.py
index fa24ab65bd..6a612a2226 100644
--- a/tryton/tryton/gui/window/view_form/view/form_gtk/many2one.py
+++ b/tryton/tryton/gui/window/view_form/view/form_gtk/many2one.py
@@ -19,6 +19,7 @@ _ = gettext.gettext
 
 
 class Many2One(Widget):
+    default_width_chars = 12
 
     def __init__(self, view, attrs):
         super(Many2One, self).__init__(view, attrs)
diff --git a/tryton/tryton/gui/window/view_form/view/form_gtk/widget.py b/tryton/tryton/gui/window/view_form/view/form_gtk/widget.py
index b88ed75d17..47f3a29c2d 100644
--- a/tryton/tryton/gui/window/view_form/view/form_gtk/widget.py
+++ b/tryton/tryton/gui/window/view_form/view/form_gtk/widget.py
@@ -16,7 +16,7 @@ _ = gettext.gettext
 
 class Widget(object):
     expand = False
-    default_width_chars = 25
+    default_width_chars = 8
 
     def __init__(self, view, attrs):
         super(Widget, self).__init__()