diff --git a/addons/account/wizard/wizard_third_party_ledger.py b/addons/account/wizard/wizard_third_party_ledger.py
index c89f87fd8e0..6bf415d0ca6 100755
--- a/addons/account/wizard/wizard_third_party_ledger.py
+++ b/addons/account/wizard/wizard_third_party_ledger.py
@@ -114,7 +114,7 @@ class wizard_report(wizard.interface):
 
         sql = """
             SELECT f.id, f.date_start, f.date_stop FROM account_fiscalyear f  Where %s between f.date_start and f.date_stop """
-        cr.execute(sql,(data['form']['date1']))
+        cr.execute(sql,(data['form']['date1'],))
         res = cr.dictfetchall()
         if res:
             if (data['form']['date2'] > res[0]['date_stop'] or data['form']['date2'] < res[0]['date_start']):