diff --git a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RoomDirectorySearchProcessor.kt b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RoomDirectorySearchProcessor.kt
index e9bed50951..6ae3103448 100644
--- a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RoomDirectorySearchProcessor.kt
+++ b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RoomDirectorySearchProcessor.kt
@@ -19,8 +19,8 @@ import kotlin.coroutines.CoroutineContext
 class RoomDirectorySearchProcessor(
     private val roomDescriptions: MutableSharedFlow<List<RoomDescription>>,
     private val coroutineContext: CoroutineContext,
-    private val roomDescriptionMapper: RoomDescriptionMapper,
 ) {
+    private val roomDescriptionMapper: RoomDescriptionMapper = RoomDescriptionMapper()
     private val mutex = Mutex()
 
     suspend fun postUpdates(updates: List<RoomDirectorySearchEntryUpdate>) {
diff --git a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RustRoomDirectoryList.kt b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RustRoomDirectoryList.kt
index 33f571855e..2d627c9358 100644
--- a/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RustRoomDirectoryList.kt
+++ b/libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RustRoomDirectoryList.kt
@@ -28,7 +28,7 @@ class RustRoomDirectoryList(
 ) : RoomDirectoryList {
     private val hasMoreToLoad = MutableStateFlow(true)
     private val items = MutableSharedFlow<List<RoomDescription>>(replay = 1)
-    private val processor = RoomDirectorySearchProcessor(items, coroutineContext, RoomDescriptionMapper())
+    private val processor = RoomDirectorySearchProcessor(items, coroutineContext)
 
     init {
         launchIn(coroutineScope)
diff --git a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeRoomDirectorySearch.kt b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeRoomDirectorySearch.kt
new file mode 100644
index 0000000000..7ff65167ec
--- /dev/null
+++ b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeRoomDirectorySearch.kt
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Please see LICENSE in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.impl.fixtures.fakes
+
+import org.matrix.rustcomponents.sdk.NoPointer
+import org.matrix.rustcomponents.sdk.RoomDirectorySearch
+
+class FakeRoomDirectorySearch : RoomDirectorySearch(NoPointer)
diff --git a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeRustClient.kt b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeRustClient.kt
index fd9b02b417..935537a27f 100644
--- a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeRustClient.kt
+++ b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/fakes/FakeRustClient.kt
@@ -17,6 +17,7 @@ import org.matrix.rustcomponents.sdk.NoPointer
 import org.matrix.rustcomponents.sdk.NotificationClient
 import org.matrix.rustcomponents.sdk.NotificationProcessSetup
 import org.matrix.rustcomponents.sdk.NotificationSettings
+import org.matrix.rustcomponents.sdk.RoomDirectorySearch
 import org.matrix.rustcomponents.sdk.Session
 import org.matrix.rustcomponents.sdk.SyncServiceBuilder
 import org.matrix.rustcomponents.sdk.TaskHandle
@@ -39,4 +40,5 @@ class FakeRustClient(
     override fun cachedAvatarUrl(): String? = null
     override suspend fun restoreSession(session: Session) = Unit
     override fun syncService(): SyncServiceBuilder = FakeRustSyncServiceBuilder()
+    override fun roomDirectorySearch(): RoomDirectorySearch = FakeRoomDirectorySearch()
 }
diff --git a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RustRoomDirectoryServiceTest.kt b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RustRoomDirectoryServiceTest.kt
new file mode 100644
index 0000000000..c9c91713b2
--- /dev/null
+++ b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/roomdirectory/RustRoomDirectoryServiceTest.kt
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Please see LICENSE in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.impl.roomdirectory
+
+import io.element.android.libraries.matrix.impl.fixtures.fakes.FakeRustClient
+import io.element.android.tests.testutils.testCoroutineDispatchers
+import kotlinx.coroutines.test.runTest
+import org.junit.Test
+
+class RustRoomDirectoryServiceTest {
+    @Test
+    fun test() = runTest {
+        val client = FakeRustClient()
+        val sut = RustRoomDirectoryService(
+            client = client,
+            sessionDispatcher = testCoroutineDispatchers().io,
+        )
+        sut.createRoomDirectoryList(this)
+    }
+}