diff --git a/conference.py b/conference.py
index d360c18..91f7aa4 100755
--- a/conference.py
+++ b/conference.py
@@ -315,9 +315,11 @@ try:
 except agi.AGIAppError as e:
 	logging.info('An AGI error stop script : %s' % e)
 	clean_tmp()
-	sys.exit(0)
+	hangup(asterisk_agi)
+	sys.exit(1)
 except Exception as e:
 	logging.error(traceback.format_exc())
 	set_return(None)
 	clean_tmp()
+	hangup(asterisk_agi)
 	sys.exit(1)