diff --git a/xreport.py b/xreport.py
index d104558..88d58f6 100644
--- a/xreport.py
+++ b/xreport.py
@@ -105,7 +105,7 @@ class XReport(Report):
             # no report defined, use 1st found
             act_report = ActionReport.search([
                 ('model', '=', 'account.invoice'),
-                ('extension', '=', 'pdf')], count=1)
+                ('extension', '=', 'pdf')], limit=1)
             if act_report:
                 act_report = act_report[0]
         if not act_report: