diff --git a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomSummaryDetailsFactory.kt b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomSummaryDetailsFactory.kt
index 26a14a3b86..e40729d676 100644
--- a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomSummaryDetailsFactory.kt
+++ b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomSummaryDetailsFactory.kt
@@ -16,16 +16,16 @@
 
 package io.element.android.libraries.matrix.impl.room
 
-import io.element.android.libraries.matrix.impl.room.message.RoomMessageFactory
 import io.element.android.libraries.matrix.api.core.RoomId
 import io.element.android.libraries.matrix.api.room.RoomSummaryDetails
+import io.element.android.libraries.matrix.impl.room.message.RoomMessageFactory
 import org.matrix.rustcomponents.sdk.Room
 import org.matrix.rustcomponents.sdk.SlidingSyncRoom
 
 class RoomSummaryDetailsFactory(private val roomMessageFactory: RoomMessageFactory = RoomMessageFactory()) {
 
     fun create(slidingSyncRoom: SlidingSyncRoom, room: Room?): RoomSummaryDetails {
-        val latestRoomMessage = slidingSyncRoom.latestRoomMessage()?.let {
+        val latestRoomMessage = slidingSyncRoom.latestRoomMessage()?.use {
             roomMessageFactory.create(it)
         }
         val computedLastMessage = when {
@@ -38,7 +38,7 @@ class RoomSummaryDetailsFactory(private val roomMessageFactory: RoomMessageFacto
             name = slidingSyncRoom.name() ?: slidingSyncRoom.roomId(),
             isDirect = slidingSyncRoom.isDm() ?: false,
             avatarURLString = room?.avatarUrl(),
-            unreadNotificationCount = slidingSyncRoom.unreadNotifications().notificationCount().toInt(),
+            unreadNotificationCount = slidingSyncRoom.unreadNotifications().use { it.notificationCount().toInt() },
             lastMessage = computedLastMessage,
             lastMessageTimestamp = latestRoomMessage?.originServerTs
         )
diff --git a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RustRoomSummaryDataSource.kt b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RustRoomSummaryDataSource.kt
index cae0515f5a..8691c06664 100644
--- a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RustRoomSummaryDataSource.kt
+++ b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RustRoomSummaryDataSource.kt
@@ -17,10 +17,10 @@
 package io.element.android.libraries.matrix.impl.room
 
 import io.element.android.libraries.core.coroutine.CoroutineDispatchers
-import io.element.android.libraries.matrix.impl.sync.roomListDiff
-import io.element.android.libraries.matrix.impl.sync.state
 import io.element.android.libraries.matrix.api.room.RoomSummary
 import io.element.android.libraries.matrix.api.room.RoomSummaryDataSource
+import io.element.android.libraries.matrix.impl.sync.roomListDiff
+import io.element.android.libraries.matrix.impl.sync.state
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancel
@@ -179,10 +179,14 @@ internal class RustRoomSummaryDataSource(
     }
 
     private fun buildRoomSummaryForIdentifier(identifier: String): RoomSummary {
-        val room = slidingSync.getRoom(identifier) ?: return RoomSummary.Empty(identifier)
-        return RoomSummary.Filled(
-            details = roomSummaryDetailsFactory.create(room, room.fullRoom())
+        val slidingSyncRoom = slidingSync.getRoom(identifier) ?: return RoomSummary.Empty(identifier)
+        val fullRoom = slidingSyncRoom.fullRoom()
+        val roomSummary = RoomSummary.Filled(
+            details = roomSummaryDetailsFactory.create(slidingSyncRoom, fullRoom)
         )
+        fullRoom?.destroy()
+        slidingSyncRoom.destroy()
+        return roomSummary
     }
 
     private suspend fun updateRoomSummaries(block: MutableList<RoomSummary>.() -> Unit) =