diff --git a/addons/mass_mailing/data/ir_cron_data.xml b/addons/mass_mailing/data/ir_cron_data.xml
index c83a2387daf..f3304e993e1 100644
--- a/addons/mass_mailing/data/ir_cron_data.xml
+++ b/addons/mass_mailing/data/ir_cron_data.xml
@@ -20,6 +20,7 @@
code
model._cron_process_mass_mailing_ab_testing()
+
1
days
-1