diff --git a/src/matrix/room/timeline/entries/FragmentBoundaryEntry.js b/src/matrix/room/timeline/entries/FragmentBoundaryEntry.js
index 0a336975..10ae7ec4 100644
--- a/src/matrix/room/timeline/entries/FragmentBoundaryEntry.js
+++ b/src/matrix/room/timeline/entries/FragmentBoundaryEntry.js
@@ -5,6 +5,7 @@ export default class FragmentBoundaryEntry extends BaseEntry {
     constructor(fragment, isFragmentStart, fragmentIdComparator) {
         super(fragmentIdComparator);
         this._fragment = fragment;
+        // TODO: should isFragmentStart be Direction instead of bool?
         this._isFragmentStart = isFragmentStart;
     }
 
diff --git a/src/matrix/room/timeline/persistence/TimelineReader.js b/src/matrix/room/timeline/persistence/TimelineReader.js
index 0fbc59e6..8f2e5a4d 100644
--- a/src/matrix/room/timeline/persistence/TimelineReader.js
+++ b/src/matrix/room/timeline/persistence/TimelineReader.js
@@ -70,7 +70,7 @@ export default class TimelineReader {
             return [];
         }
         this._fragmentIdComparer.add(liveFragment);
-        const liveFragmentEntry = new FragmentBoundaryEntry(liveFragment, Direction.Forward, this._fragmentIdComparer);
+        const liveFragmentEntry = FragmentBoundaryEntry.end(liveFragment, this._fragmentIdComparer);
         const eventKey = new EventKey(liveFragmentEntry.fragmentId, liveFragmentEntry.eventIndex);
         const entries = this._readFrom(eventKey, Direction.Backward, amount, txn);
         entries.unshift(liveFragmentEntry);