diff --git a/src/calibre/gui2/widgets.py b/src/calibre/gui2/widgets.py
index e3874fdc3a..97758482fc 100644
--- a/src/calibre/gui2/widgets.py
+++ b/src/calibre/gui2/widgets.py
@@ -1,3 +1,4 @@
+__license__   = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 '''
 Miscellaneous widgets used in the GUI