diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemEncryptedContentProvider.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemEncryptedContentProvider.kt
index fafc65ac1b..5c2b059ba5 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemEncryptedContentProvider.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/model/event/TimelineItemEncryptedContentProvider.kt
@@ -27,7 +27,13 @@ open class TimelineItemEncryptedContentProvider : PreviewParameterProvider<Timel
             aTimelineItemEncryptedContent(
                 data = UnableToDecryptContent.Data.MegolmV1AesSha2(
                     sessionId = "sessionId",
-                    utdCause = UtdCause.Membership
+                    utdCause = UtdCause.Membership,
+                )
+            ),
+            aTimelineItemEncryptedContent(
+                data = UnableToDecryptContent.Data.MegolmV1AesSha2(
+                    sessionId = "sessionId",
+                    utdCause = UtdCause.Unknown,
                 )
             ),
         )