diff --git a/vector/src/main/java/im/vector/app/features/notifications/NotificationFactory.kt b/vector/src/main/java/im/vector/app/features/notifications/NotificationFactory.kt
index 019b37d61a..afea56c5b9 100644
--- a/vector/src/main/java/im/vector/app/features/notifications/NotificationFactory.kt
+++ b/vector/src/main/java/im/vector/app/features/notifications/NotificationFactory.kt
@@ -86,9 +86,9 @@ class NotificationFactory @Inject constructor(
                                   invitationNotifications: List<OneShotNotification>,
                                   simpleNotifications: List<OneShotNotification>,
                                   useCompleteNotificationFormat: Boolean): SummaryNotification {
-        val roomMeta = roomNotifications.mapToMeta()
-        val invitationMeta = invitationNotifications.mapToMeta()
-        val simpleMeta = simpleNotifications.mapToMeta()
+        val roomMeta = roomNotifications.filterIsInstance<RoomNotification.Message>().map { it.meta }
+        val invitationMeta = invitationNotifications.filterIsInstance<OneShotNotification.Append>().map { it.meta }
+        val simpleMeta = simpleNotifications.filterIsInstance<OneShotNotification.Append>().map { it.meta }
         return when {
             roomMeta.isEmpty() && invitationMeta.isEmpty() && simpleMeta.isEmpty() -> SummaryNotification.Removed
             else                                                                   -> SummaryNotification.Update(
@@ -102,11 +102,6 @@ class NotificationFactory @Inject constructor(
     }
 }
 
-private fun List<RoomNotification>.mapToMeta() = filterIsInstance<RoomNotification.Message>().map { it.meta }
-
-@JvmName("mapToMetaOneShotNotification")
-private fun List<OneShotNotification>.mapToMeta() = filterIsInstance<OneShotNotification.Append>().map { it.meta }
-
 sealed interface RoomNotification {
     data class Removed(val roomId: String) : RoomNotification
     data class Message(val notification: Notification, val shortcutInfo: ShortcutInfoCompat?, val meta: Meta) : RoomNotification {