diff --git a/addons/mail_gateway/mail_gateway_view.xml b/addons/mail_gateway/mail_gateway_view.xml
index 0ce1af446e9..bd286875e7a 100644
--- a/addons/mail_gateway/mail_gateway_view.xml
+++ b/addons/mail_gateway/mail_gateway_view.xml
@@ -181,7 +181,7 @@
mailgate.message
tree,form
form
- [('history', '=', True)]
+ [('history', '=', True)]