diff --git a/addons/base_calendar/base_calendar.py b/addons/base_calendar/base_calendar.py
index 1545c6c920c..e475a793610 100644
--- a/addons/base_calendar/base_calendar.py
+++ b/addons/base_calendar/base_calendar.py
@@ -1002,8 +1002,8 @@ class calendar_event(osv.osv):
             event = datas['id']
             if datas.get('interval', 0) < 0:
                 raise osv.except_osv(_('Warning!'), _('Interval cannot be negative'))
-            if datas.get('count', 0) < 0:
-                raise osv.except_osv(_('Warning!'), _('Count cannot be negative'))
+            if datas.get('count', 0) <= 0:
+                raise osv.except_osv(_('Warning!'), _('Count cannot be negative or 0'))
             if datas['recurrency']:
                 result[event] = self.compute_rule_string(datas)
             else: