diff --git a/account_journal_report_xls/report/nov_account_journal.py b/account_journal_report_xls/report/nov_account_journal.py
index 0ac14258..07c38d69 100644
--- a/account_journal_report_xls/report/nov_account_journal.py
+++ b/account_journal_report_xls/report/nov_account_journal.py
@@ -184,6 +184,8 @@ class NovJournalPrint(report_sxw.rml_parse):
                         (tuple(period_ids), journal_id,
                          tuple(self.move_states)))
         lines = self.cr.dictfetchall()
+        if not lines:
+            return lines
 
         # add reference of corresponding origin document
         if journal.type in ('sale', 'sale_refund', 'purchase',