diff --git a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/sync/AppStateMapperKtTest.kt b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/sync/AppStateMapperKtTest.kt
new file mode 100644
index 0000000000..54fc06f8f1
--- /dev/null
+++ b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/sync/AppStateMapperKtTest.kt
@@ -0,0 +1,23 @@
+/*
+ * 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.sync
+
+import com.google.common.truth.Truth.assertThat
+import io.element.android.libraries.matrix.api.sync.SyncState
+import org.junit.Test
+import org.matrix.rustcomponents.sdk.SyncServiceState
+
+class AppStateMapperKtTest {
+    @Test
+    fun toSyncState() {
+        assertThat(SyncServiceState.IDLE.toSyncState()).isEqualTo(SyncState.Idle)
+        assertThat(SyncServiceState.RUNNING.toSyncState()).isEqualTo(SyncState.Running)
+        assertThat(SyncServiceState.TERMINATED.toSyncState()).isEqualTo(SyncState.Terminated)
+        assertThat(SyncServiceState.ERROR.toSyncState()).isEqualTo(SyncState.Error)
+    }
+}