diff --git a/src/actions/notifications.ts b/src/actions/notifications.ts
index f0ae162c8..b269efe3c 100644
--- a/src/actions/notifications.ts
+++ b/src/actions/notifications.ts
@@ -373,9 +373,13 @@ const markReadNotifications = () =>
 
     const state = getState();
     const topNotificationId = state.notifications.items.first()?.id;
-    const lastReadId = state.notifications.lastRead;
+    let lastReadId = state.notifications.lastRead;
     const v = parseVersion(state.instance.version);
 
+    if (typeof lastReadId === 'string' && lastReadId?.includes('+')) {
+      lastReadId = lastReadId.split('+')[0];
+    }
+
     if (topNotificationId && (lastReadId === -1 || compareId(topNotificationId, lastReadId) > 0)) {
       const marker = {
         notifications: {
diff --git a/src/reducers/notifications.ts b/src/reducers/notifications.ts
index da5f7d11e..b2512c683 100644
--- a/src/reducers/notifications.ts
+++ b/src/reducers/notifications.ts
@@ -107,7 +107,7 @@ const isValid = (notification: APIEntity) => {
 // Count how many notifications appear after the given ID (for unread count)
 const countFuture = (notifications: ImmutableOrderedMap<string, NotificationRecord>, lastId: string | number) => {
   return notifications.reduce((acc, notification) => {
-    if (parseId(notification.get('id')) > parseId(lastId)) {
+    if (parseId(notification.get('id').split('+')[0]) > parseId(lastId)) {
       return acc + 1;
     } else {
       return acc;