diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimeline.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimeline.kt
index d0946abe28..92877950eb 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimeline.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimeline.kt
@@ -44,6 +44,7 @@ import org.matrix.android.sdk.internal.database.query.findAllInRoomWithSendState
 import org.matrix.android.sdk.internal.database.query.where
 import org.matrix.android.sdk.internal.database.query.whereRoomId
 import org.matrix.android.sdk.internal.session.room.membership.LoadRoomMembersTask
+import org.matrix.android.sdk.internal.session.sync.ReadReceiptHandler
 import org.matrix.android.sdk.internal.task.TaskExecutor
 import org.matrix.android.sdk.internal.task.configureWith
 import org.matrix.android.sdk.internal.util.Debouncer
@@ -73,7 +74,8 @@ internal class DefaultTimeline(
         private val timelineInput: TimelineInput,
         private val eventDecryptor: TimelineEventDecryptor,
         private val realmSessionProvider: RealmSessionProvider,
-        private val loadRoomMembersTask: LoadRoomMembersTask
+        private val loadRoomMembersTask: LoadRoomMembersTask,
+        private val readReceiptHandler: ReadReceiptHandler
 ) : Timeline,
         TimelineHiddenReadReceipts.Delegate,
         TimelineInput.Listener,
@@ -182,11 +184,26 @@ internal class DefaultTimeline(
                         }
                         .executeBy(taskExecutor)
 
+                // Ensure ReadReceipt from init sync are loaded
+                ensureReadReceiptAreLoaded(realm)
+
                 isReady.set(true)
             }
         }
     }
 
+    private fun ensureReadReceiptAreLoaded(realm: Realm) {
+        readReceiptHandler.getContentFromInitSync(roomId)
+                ?.also {
+                    Timber.w("INIT_SYNC Insert when opening timeline RR for room $roomId")
+                }
+                ?.let { readReceiptContent ->
+                    realm.executeTransactionAsync {
+                        readReceiptHandler.handle(it, roomId, readReceiptContent, true)
+                    }
+                }
+    }
+
     private fun TimelineSettings.shouldHandleHiddenReadReceipts(): Boolean {
         return buildReadReceipts && (filters.filterEdits || filters.filterTypes)
     }
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimelineService.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimelineService.kt
index bb774022d4..c3714a1303 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimelineService.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/timeline/DefaultTimelineService.kt
@@ -17,10 +17,10 @@
 package org.matrix.android.sdk.internal.session.room.timeline
 
 import androidx.lifecycle.LiveData
-import dagger.assisted.Assisted
-import dagger.assisted.AssistedInject
-import dagger.assisted.AssistedFactory
 import com.zhuinden.monarchy.Monarchy
+import dagger.assisted.Assisted
+import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
 import io.realm.Sort
 import io.realm.kotlin.where
 import org.matrix.android.sdk.api.session.events.model.isImageMessage
@@ -38,20 +38,23 @@ import org.matrix.android.sdk.internal.database.model.TimelineEventEntityFields
 import org.matrix.android.sdk.internal.database.query.where
 import org.matrix.android.sdk.internal.di.SessionDatabase
 import org.matrix.android.sdk.internal.session.room.membership.LoadRoomMembersTask
+import org.matrix.android.sdk.internal.session.sync.ReadReceiptHandler
 import org.matrix.android.sdk.internal.task.TaskExecutor
 
-internal class DefaultTimelineService @AssistedInject constructor(@Assisted private val roomId: String,
-                                                                  @SessionDatabase private val monarchy: Monarchy,
-                                                                  private val realmSessionProvider: RealmSessionProvider,
-                                                                  private val timelineInput: TimelineInput,
-                                                                  private val taskExecutor: TaskExecutor,
-                                                                  private val contextOfEventTask: GetContextOfEventTask,
-                                                                  private val eventDecryptor: TimelineEventDecryptor,
-                                                                  private val paginationTask: PaginationTask,
-                                                                  private val fetchTokenAndPaginateTask: FetchTokenAndPaginateTask,
-                                                                  private val timelineEventMapper: TimelineEventMapper,
-                                                                  private val readReceiptsSummaryMapper: ReadReceiptsSummaryMapper,
-                                                                  private val loadRoomMembersTask: LoadRoomMembersTask
+internal class DefaultTimelineService @AssistedInject constructor(
+        @Assisted private val roomId: String,
+        @SessionDatabase private val monarchy: Monarchy,
+        private val realmSessionProvider: RealmSessionProvider,
+        private val timelineInput: TimelineInput,
+        private val taskExecutor: TaskExecutor,
+        private val contextOfEventTask: GetContextOfEventTask,
+        private val eventDecryptor: TimelineEventDecryptor,
+        private val paginationTask: PaginationTask,
+        private val fetchTokenAndPaginateTask: FetchTokenAndPaginateTask,
+        private val timelineEventMapper: TimelineEventMapper,
+        private val readReceiptsSummaryMapper: ReadReceiptsSummaryMapper,
+        private val loadRoomMembersTask: LoadRoomMembersTask,
+        private val readReceiptHandler: ReadReceiptHandler
 ) : TimelineService {
 
     @AssistedFactory
@@ -74,7 +77,8 @@ internal class DefaultTimelineService @AssistedInject constructor(@Assisted priv
                 eventDecryptor = eventDecryptor,
                 fetchTokenAndPaginateTask = fetchTokenAndPaginateTask,
                 realmSessionProvider = realmSessionProvider,
-                loadRoomMembersTask = loadRoomMembersTask
+                loadRoomMembersTask = loadRoomMembersTask,
+                readReceiptHandler = readReceiptHandler
         )
     }
 
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/ReadReceiptHandler.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/ReadReceiptHandler.kt
index 7379962620..c24196ca8f 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/ReadReceiptHandler.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/ReadReceiptHandler.kt
@@ -90,55 +90,11 @@ internal class ReadReceiptHandler @Inject constructor(
         realm.insertOrUpdate(readReceiptSummaries)
     }
 
-    /**
-     * Example of content:
-     *
-     * <pre>
-     * {
-     *     "type": "m.receipt",
-     *     "content": {
-     *         "$ofZhdeinmEReG_X-agD3J2TIhosEPkuvl62HJ8pVMMs": {
-     *             "m.read": {
-     *                 "@benoit.marty:matrix.org": {
-     *                     "ts": 1610468193999
-     *                 }
-     *             }
-     *         },
-     *         "$ZMa_qwE_w_ZOj_vAxv7JuJeHCQfYzuQblmIZxkYmNMs": {
-     *             "m.read": {
-     *                 "@benoitx:matrix.org": {
-     *                     "ts": 1610468049579
-     *                 },
-     *                 "@benoit.marty:matrix.org": {
-     *                     "ts": 1609156029466
-     *                 }
-     *             }
-     *         }
-     *     }
-     * }
-     * </pre>
-     */
     private fun incrementalSyncStrategy(realm: Realm, roomId: String, content: ReadReceiptContent) {
         // First check if we have data from init sync to handle
-        // TODO Rename contentFromInitSync
-        val initSyncContent = roomSyncEphemeralTemporaryStore.read(roomId)
-                ?.events
-                ?.firstOrNull { it.type == EventType.RECEIPT }
-                ?.let {
-                    @Suppress("UNCHECKED_CAST")
-                    it.content as? ReadReceiptContent
-                }
-                ?.also {
-                    Timber.w("INIT_SYNC Copy RR for room $roomId")
-                }
-
-        initSyncContent?.let {
-            Timber.w("BOOK Copy RR for room $roomId")
-
-            // TODO Merge with data we just received
-            // TODO Store that when we enter the timeline
+        getContentFromInitSync(roomId)?.let {
+            Timber.w("INIT_SYNC Insert during incremental sync RR for room $roomId")
             initialSyncStrategy(realm, roomId, it)
-            roomSyncEphemeralTemporaryStore.delete(roomId)
         }
 
         for ((eventId, receiptDict) in content) {
@@ -163,4 +119,17 @@ internal class ReadReceiptHandler @Inject constructor(
             }
         }
     }
+
+    fun getContentFromInitSync(roomId: String): ReadReceiptContent? {
+        return roomSyncEphemeralTemporaryStore.read(roomId)
+                ?.events
+                ?.firstOrNull { it.type == EventType.RECEIPT }
+                ?.let {
+                    @Suppress("UNCHECKED_CAST")
+                    it.content as? ReadReceiptContent
+                }
+                ?.also {
+                    roomSyncEphemeralTemporaryStore.delete(roomId)
+                }
+    }
 }
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/RoomSyncEphemeralTemporaryStore.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/RoomSyncEphemeralTemporaryStore.kt
index 8d53c63bcc..5241c6f725 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/RoomSyncEphemeralTemporaryStore.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/RoomSyncEphemeralTemporaryStore.kt
@@ -45,7 +45,7 @@ internal class RoomSyncEphemeralTemporaryStoreFile @Inject constructor(
      * Write RoomSyncEphemeral to a file
      */
     override fun write(roomId: String, roomSyncEphemeralJson: String) {
-        Timber.w("INIT_SYNC Store RR for room $roomId")
+        Timber.w("INIT_SYNC Store ephemeral events for room $roomId")
         getFile(roomId).writeText(roomSyncEphemeralJson)
     }