diff --git a/tryton/common/common.py b/tryton/common/common.py
index 014969dfb3..79f7a43c9e 100644
--- a/tryton/common/common.py
+++ b/tryton/common/common.py
@@ -887,7 +887,7 @@ def process_exception(exception, *args, **kwargs):
                     Login()
                 except TrytonError as exception:
                     if exception.faultCode == 'QueryCanceled':
-                        Main().sig_quit()
+                        Main().on_quit()
                     raise
                 finally:
                     PLOCK.release()