diff --git a/addons/mail_gateway/security/ir.model.access.csv b/addons/mail_gateway/security/ir.model.access.csv
index db70d947de2..25aca3518c3 100644
--- a/addons/mail_gateway/security/ir.model.access.csv
+++ b/addons/mail_gateway/security/ir.model.access.csv
@@ -1,3 +1,4 @@
 "id","name","model_id:id","group_id:id","perm_read","perm_write","perm_create","perm_unlink"
 "mail_gateway_mailgate_message","mail_gateway.mailgate.message","model_mailgate_message","base.group_system",1,1,1,1
 "mail_gateway_mailgate_thread","mail_gateway.mailgate.thread","model_mailgate_thread","base.group_system",1,1,1,1
+"mail_gateway_message_internal_user","mail_gateway.mailgate.message.internal","model_mailgate_message","base.group_user",1,0,0,0