diff --git a/src/services/entity_normalizer/entity_normalizer.service.js b/src/services/entity_normalizer/entity_normalizer.service.js
index 06f7e938d9..36a9508ae5 100644
--- a/src/services/entity_normalizer/entity_normalizer.service.js
+++ b/src/services/entity_normalizer/entity_normalizer.service.js
@@ -280,7 +280,7 @@ export const parseNotification = (data) => {
 
   if (masto) {
     output.type = mastoDict[data.type] || data.type
-    // output.seen = ??? missing
+    output.seen = data.pleroma.is_seen
     output.status = output.type === 'follow'
       ? parseFollow(data)
       : parseStatus(data.status)
diff --git a/src/services/notifications_fetcher/notifications_fetcher.service.js b/src/services/notifications_fetcher/notifications_fetcher.service.js
index 9eac5ab443..60c497ae0c 100644
--- a/src/services/notifications_fetcher/notifications_fetcher.service.js
+++ b/src/services/notifications_fetcher/notifications_fetcher.service.js
@@ -11,33 +11,35 @@ const fetchAndUpdate = ({store, credentials, older = false}) => {
   const rootState = store.rootState || store.state
   const timelineData = rootState.statuses.notifications
 
+  args['timeline'] = 'notifications'
   if (older) {
     if (timelineData.minId !== Number.POSITIVE_INFINITY) {
       args['until'] = timelineData.minId
     }
+    return fetchNotifications({ store, args, older })
   } else {
+    // fetch new notifications
     if (timelineData.maxId !== Number.POSITIVE_INFINITY) {
       args['since'] = timelineData.maxId
     }
-    // # disabled until is_seen is impelented on the BE
-    // load unread notifications repeadedly to provide consistency between browser tabs
-    // const notifications = timelineData.data
-    // const unread = notifications.filter(n => !n.seen).map(n => n.id)
-    // if (!unread.length) {
-    //   args['since'] = timelineData.maxId
-    // } else {
-    //   args['since'] = Math.min(...unread) - 1
-    //   if (timelineData.maxId !== Math.max(...unread)) {
-    //     args['until'] = Math.max(...unread, args['since'] + 20)
-    //   }
-    // }
+    const result = fetchNotifications({ store, args, older })
+
+    // load unread notifications repeatedly to provide consistency between browser tabs
+    const notifications = timelineData.data
+    const unread = notifications.filter(n => !n.seen).map(n => n.id)
+    if (unread.length) {
+      args['since'] = Math.min(...unread)
+      fetchNotifications({ store, args, older })
+    }
+
+    return result
   }
+}
 
-  args['timeline'] = 'notifications'
-
+const fetchNotifications = ({ store, args, older }) => {
   return apiService.fetchTimeline(args)
     .then((notifications) => {
-      update({store, notifications, older})
+      update({ store, notifications, older })
       return notifications
     }, () => store.dispatch('setNotificationsError', { value: true }))
     .catch(() => store.dispatch('setNotificationsError', { value: true }))