diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineState.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineState.kt
index 592af0693d..c32dbad723 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineState.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/TimelineState.kt
@@ -36,6 +36,7 @@ data class TimelineState(
     val hasAnyEvent = timelineItems.any { it is TimelineItem.Event }
 }
 
+@Immutable
 sealed interface FocusRequestState {
     data object None : FocusRequestState
     data class Cached(val index: Int) : FocusRequestState