diff --git a/addons/web_calendar/static/lib/dhtmlxScheduler/license.txt b/addons/web_calendar/static/lib/dhtmlxScheduler/license.txt
index d273d6c65a8..aa990f0d035 100644
--- a/addons/web_calendar/static/lib/dhtmlxScheduler/license.txt
+++ b/addons/web_calendar/static/lib/dhtmlxScheduler/license.txt
@@ -5,7 +5,7 @@ Version 2, June 1991
 
 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
 
-51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 
 Everyone is permitted to copy and distribute verbatim copies