diff --git a/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt b/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt
index bf9390533a..47f97404a3 100644
--- a/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt
+++ b/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt
@@ -301,7 +301,7 @@ class DefaultNotifiableEventResolver(
                 throw NotificationResolverException.EventFilteredOut
             }
             is NotificationContent.StateEvent.RoomMemberContent -> {
-                // MSCxxxx: the homeserver pushes knocks to users who can act on them.
+                // MSC4506: the homeserver pushes knocks to users who can act on them.
                 if (content.membershipState == RoomMembershipState.KNOCK) {
                     val notifiableMessageEvent = buildNotifiableMessageEvent(
                         sessionId = userId,
diff --git a/libraries/push/impl/src/main/res/values/temporary.xml b/libraries/push/impl/src/main/res/values/temporary.xml
index 7a569d555e..494f2ee441 100644
--- a/libraries/push/impl/src/main/res/values/temporary.xml
+++ b/libraries/push/impl/src/main/res/values/temporary.xml
@@ -6,6 +6,6 @@
   -->
 
 <resources>
-    <!-- Body of the notification shown to users who can act on a knock (MSCxxxx knock push rule). -->
+    <!-- Body of the notification shown to users who can act on a knock (MSC4506 knock push rule). -->
     <string name="notification_knock_request_body">"Requested to join"</string>
 </resources>