diff --git a/product/ERP5Form/ListBox.py b/product/ERP5Form/ListBox.py
index f909b5d0b68650866d1e340aa62f05ba607e0a72..609aaca3d2ffdf58692179344db39ac8b80d089b 100644
--- a/product/ERP5Form/ListBox.py
+++ b/product/ERP5Form/ListBox.py
@@ -378,6 +378,8 @@ class ListBoxWidget(Widget.Widget):
 
           which is intended to simplify operation with a spreadsheet or a pagetemplate
         """
+        if REQUEST is None:
+          REQUEST = get_request()
         if render_format == 'list':
           renderer = ListBoxListRenderer(self, field, REQUEST)
         else: