diff --git a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/EventTimelineItemContent.kt b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/EventTimelineItemContent.kt
index 6e2def8aff..b7ea8510c2 100644
--- a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/EventTimelineItemContent.kt
+++ b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/EventTimelineItemContent.kt
@@ -27,5 +27,6 @@ fun aRustTimelineItemMessageContent(body: String = "Hello") = TimelineItemConten
         reactions = emptyList(),
         threadRoot = null,
         inReplyTo = null,
+        threadSummary = null,
     ),
 )