diff --git a/app/javascript/mastodon/actions/markers.js b/app/javascript/mastodon/actions/markers.js
index 41a95503eb..c4b61effdd 100644
--- a/app/javascript/mastodon/actions/markers.js
+++ b/app/javascript/mastodon/actions/markers.js
@@ -100,8 +100,12 @@ export function submitMarkersSuccess({ home, notifications }) {
   };
 };
 
-export function submitMarkers() {
-  return (dispatch, getState) => debouncedSubmitMarkers(dispatch, getState);
+export function submitMarkers(params = {}) {
+  const result = (dispatch, getState) => debouncedSubmitMarkers(dispatch, getState);
+  if (params.immediate === true) {
+    debouncedSubmitMarkers.flush();
+  }
+  return result;
 };
 
 export const fetchMarkers = () => (dispatch, getState) => {
diff --git a/app/javascript/mastodon/features/notifications/index.js b/app/javascript/mastodon/features/notifications/index.js
index 41a45b2b6c..68afe593d2 100644
--- a/app/javascript/mastodon/features/notifications/index.js
+++ b/app/javascript/mastodon/features/notifications/index.js
@@ -12,6 +12,7 @@ import {
   unmountNotifications,
   markNotificationsAsRead,
 } from '../../actions/notifications';
+import { submitMarkers } from '../../actions/markers';
 import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
 import NotificationContainer from './containers/notification_container';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
@@ -162,6 +163,7 @@ class Notifications extends React.PureComponent {
 
   handleMarkAsRead = () => {
     this.props.dispatch(markNotificationsAsRead());
+    this.props.dispatch(submitMarkers({ immediate: true }));
   };
 
   render () {
diff --git a/app/javascript/mastodon/features/ui/index.js b/app/javascript/mastodon/features/ui/index.js
index d05133507f..b53e319d26 100644
--- a/app/javascript/mastodon/features/ui/index.js
+++ b/app/javascript/mastodon/features/ui/index.js
@@ -266,7 +266,7 @@ class UI extends React.PureComponent {
 
   handleWindowFocus = () => {
     this.props.dispatch(focusApp());
-    this.props.dispatch(submitMarkers());
+    this.props.dispatch(submitMarkers({ immediate: true }));
   }
 
   handleWindowBlur = () => {