diff --git a/changelog.d/6665.doc b/changelog.d/6665.doc
new file mode 100644
index 000000000..bc9a022db
--- /dev/null
+++ b/changelog.d/6665.doc
@@ -0,0 +1 @@
+Add complete documentation of the message retention policies support.
diff --git a/docs/message_retention_policies.md b/docs/message_retention_policies.md
index c4888c81b..4300809df 100644
--- a/docs/message_retention_policies.md
+++ b/docs/message_retention_policies.md
@@ -101,7 +101,7 @@ file. An example of such configuration could be:
       interval: 2d
 ```
 
-In this example, we define two jobs:
+In this example, we define three jobs:
 
 * one that runs twice a day (every 12 hours) and purges events in rooms
   which policy's `max_lifetime` is lower or equal to 3 days.