diff --git a/changelog.d/8365.misc b/changelog.d/8365.misc
new file mode 100644
index 0000000000..ef9bbdca04
--- /dev/null
+++ b/changelog.d/8365.misc
@@ -0,0 +1 @@
+Matrix-Ids are sometimes shown in notice events instead of display names
diff --git a/library/ui-strings/src/main/res/values/strings.xml b/library/ui-strings/src/main/res/values/strings.xml
index 8325b19b93..1a1546459e 100644
--- a/library/ui-strings/src/main/res/values/strings.xml
+++ b/library/ui-strings/src/main/res/values/strings.xml
@@ -39,7 +39,9 @@
     <string name="notice_avatar_url_changed_by_you">You changed your avatar</string>
     <string name="notice_display_name_set">%1$s set their display name to %2$s</string>
     <string name="notice_display_name_set_by_you">You set your display name to %1$s</string>
-    <string name="notice_display_name_changed_from">%1$s changed their display name from %2$s to %3$s</string>
+    <!-- TODO TO BE REMOVED -->
+    <string tools:ignore="UnusedResources" name="notice_display_name_changed_from">%1$s changed their display name from %2$s to %3$s</string>
+    <string name="notice_display_name_changed_to">%1$s changed their display name to %2$s</string>
     <string name="notice_display_name_changed_from_by_you">You changed your display name from %1$s to %2$s</string>
     <string name="notice_display_name_removed">%1$s removed their display name (it was %2$s)</string>
     <string name="notice_display_name_removed_by_you">You removed your display name (it was %1$s)</string>
diff --git a/vector/src/main/java/im/vector/app/features/home/room/detail/timeline/format/NoticeEventFormatter.kt b/vector/src/main/java/im/vector/app/features/home/room/detail/timeline/format/NoticeEventFormatter.kt
index a306dd6b2f..62945195c8 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/detail/timeline/format/NoticeEventFormatter.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/detail/timeline/format/NoticeEventFormatter.kt
@@ -124,6 +124,7 @@ class NoticeEventFormatter @Inject constructor(
     private fun formatRoomPowerLevels(event: Event, disambiguatedDisplayName: String): CharSequence? {
         val powerLevelsContent: PowerLevelsContent = event.content.toModel() ?: return null
         val previousPowerLevelsContent: PowerLevelsContent = event.resolvedPrevContent().toModel() ?: return null
+        val roomService = activeSessionDataSource.currentValue?.orNull()?.roomService()
         val userIds = HashSet<String>()
         userIds.addAll(powerLevelsContent.users.orEmpty().keys)
         userIds.addAll(previousPowerLevelsContent.users.orEmpty().keys)
@@ -134,7 +135,8 @@ class NoticeEventFormatter @Inject constructor(
             if (from != to) {
                 val fromStr = roleFormatter.format(from)
                 val toStr = roleFormatter.format(to)
-                val diff = sp.getString(R.string.notice_power_level_diff, userId, fromStr, toStr)
+                val displayName = event.roomId?.let { roomService?.getRoomMember(userId, it)?.displayName } ?: userId
+                val diff = sp.getString(R.string.notice_power_level_diff, displayName, fromStr, toStr)
                 diffs.add(diff)
             }
         }
@@ -644,7 +646,7 @@ class NoticeEventFormatter @Inject constructor(
                     if (event.isSentByCurrentUser()) {
                         sp.getString(R.string.notice_display_name_changed_from_by_you, prevEventContent?.displayName, eventContent?.displayName)
                     } else {
-                        sp.getString(R.string.notice_display_name_changed_from, event.senderId, prevEventContent?.displayName, eventContent?.displayName)
+                        sp.getString(R.string.notice_display_name_changed_to, prevEventContent?.displayName, eventContent?.displayName)
                     }
             }
             displayText.append(displayNameText)