diff --git a/addons/mail/mail_message_view.xml b/addons/mail/mail_message_view.xml
index dad4946268a..e58c2d1c818 100644
--- a/addons/mail/mail_message_view.xml
+++ b/addons/mail/mail_message_view.xml
@@ -6,7 +6,7 @@
mail.message.tree.short
mail.message
tree
- 15
+ 20
@@ -23,7 +23,7 @@
mail.message.form.short
mail.message
form
- 15
+ 20