diff --git a/en_US/howto/change.mailbox.format.md b/en_US/howto/change.mailbox.format.md
index 23e1ad97..cd39090b 100644
--- a/en_US/howto/change.mailbox.format.md
+++ b/en_US/howto/change.mailbox.format.md
@@ -5,12 +5,11 @@ maintain, but if mailbox size is growing, the performance will be getting
slower due to too much disk I/O. Dovecot's own mailbox format `mdbox` has very
good performance for large mailbox due to reduced disk I/O.
-You may want to switch to other mailbox format supported by Dovecot for some
-other reason, for example, separate attachment from mail message, higher
-performance, etc. To help you switch easily, iRedMail-0.9.9 introduces 2 new
+You may want to switch to other mailbox format for some reason.
+To help you switch easily, iRedMail-0.9.9 introduces 2 new
SQL columns (for SQL backends) and LDAP attributes (for LDAP backends) to help
you switch per-user mailbox format easily. All
-[https://wiki2.dovecot.org/MailboxFormat](mailbox formats supported by Dovecot)
+[mailbox formats supported by Dovecot]https://wiki2.dovecot.org/MailboxFormat)
is supported in iRedMail.
!!! attention
diff --git a/html/change.mailbox.format.html b/html/change.mailbox.format.html
index 35562ad2..6d8e3ae8 100644
--- a/html/change.mailbox.format.html
+++ b/html/change.mailbox.format.html
@@ -20,12 +20,11 @@
maintain, but if mailbox size is growing, the performance will be getting
slower due to too much disk I/O. Dovecot's own mailbox format mdbox has very
good performance for large mailbox due to reduced disk I/O.
-You may want to switch to other mailbox format supported by Dovecot for some
-other reason, for example, separate attachment from mail message, higher
-performance, etc. To help you switch easily, iRedMail-0.9.9 introduces 2 new
+
You may want to switch to other mailbox format for some reason.
+To help you switch easily, iRedMail-0.9.9 introduces 2 new
SQL columns (for SQL backends) and LDAP attributes (for LDAP backends) to help
you switch per-user mailbox format easily. All
-https://wiki2.dovecot.org/MailboxFormat
+[mailbox formats supported by Dovecot]https://wiki2.dovecot.org/MailboxFormat)
is supported in iRedMail.