diff --git a/src/components/structures/ThreadPanel.tsx b/src/components/structures/ThreadPanel.tsx
index 4862361639..03798198ad 100644
--- a/src/components/structures/ThreadPanel.tsx
+++ b/src/components/structures/ThreadPanel.tsx
@@ -286,7 +286,7 @@ const ThreadPanel: React.FC<IProps> = ({
                 />
                 { timelineSet && (
                     <TimelinePanel
-                        key={timelineSet.getFilter().filterId}
+                        key={timelineSet.getFilter()?.filterId ?? (roomId + ":" + filterOption)}
                         ref={timelinePanel}
                         showReadReceipts={false} // No RR support in thread's MVP
                         manageReadReceipts={false} // No RR support in thread's MVP