diff --git a/changelog.d/5481.bugfix b/changelog.d/5481.bugfix
new file mode 100644
index 00000000000..64891b503c1
--- /dev/null
+++ b/changelog.d/5481.bugfix
@@ -0,0 +1 @@
+Fix sometimes read marker not properly updating
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/helper/ChunkEntityHelper.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/helper/ChunkEntityHelper.kt
index 289db9fa15b..8bec2a443c5 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/helper/ChunkEntityHelper.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/helper/ChunkEntityHelper.kt
@@ -223,6 +223,9 @@ internal fun ChunkEntity.isMoreRecentThan(chunkToCheck: ChunkEntity): Boolean {
     if (chunkToCheck.doesNextChunksVerifyCondition { it == this }) {
         return true
     }
+    if (this.doesNextChunksVerifyCondition { it == chunkToCheck }) {
+        return false
+    }
     // Otherwise check if this chunk is linked to last forward
     if (this.doesNextChunksVerifyCondition { it.isLastForward }) {
         return true
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/query/ReadQueries.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/query/ReadQueries.kt
index 8cc99c3d2fd..6c587dfcae8 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/query/ReadQueries.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/query/ReadQueries.kt
@@ -94,7 +94,7 @@ internal fun isReadMarkerMoreRecent(realmConfiguration: RealmConfiguration,
             val eventToCheckIndex = eventToCheck?.displayIndex ?: Int.MAX_VALUE
             eventToCheckIndex <= readMarkerIndex
         } else {
-            eventToCheckChunk?.isLastForward == false
+            eventToCheckChunk != null && readMarkerChunk?.isMoreRecentThan(eventToCheckChunk) == true
         }
     }
 }