diff --git a/res/css/views/rooms/_TopUnreadMessagesBar.scss b/res/css/views/rooms/_TopUnreadMessagesBar.scss
index a3916f321a..5f6f869877 100644
--- a/res/css/views/rooms/_TopUnreadMessagesBar.scss
+++ b/res/css/views/rooms/_TopUnreadMessagesBar.scss
@@ -56,3 +56,17 @@ limitations under the License.
     mask-position: 9px 13px;
     background: $roomtile-name-color;
 }
+
+.mx_TopUnreadMessagesBar_markAsRead {
+    display: block;
+    width: 18px;
+    height: 18px;
+    background-image: url('$(res)/img/cancel.svg');
+    background-position: center;
+    background-size: 10px;
+    background-repeat: no-repeat;
+    background-color: $primary-bg-color;
+    border: 1.3px solid $roomtile-name-color;
+    border-radius: 99px;
+    margin: 5px auto;
+}
diff --git a/src/components/views/rooms/TopUnreadMessagesBar.js b/src/components/views/rooms/TopUnreadMessagesBar.js
index 04805c799f..23d41059c4 100644
--- a/src/components/views/rooms/TopUnreadMessagesBar.js
+++ b/src/components/views/rooms/TopUnreadMessagesBar.js
@@ -27,6 +27,7 @@ export default createReactClass({
 
     propTypes: {
         onScrollUpClick: PropTypes.func,
+        onCloseClick: PropTypes.func,
     },
 
     render: function() {
@@ -36,6 +37,10 @@ export default createReactClass({
                     title={_t('Jump to first unread message.')}
                     onClick={this.props.onScrollUpClick}>
                 </AccessibleButton>
+                <AccessibleButton className="mx_TopUnreadMessagesBar_markAsRead"
+                    title={_t('Mark all as read')}
+                    onClick={this.props.onCloseClick}>
+                </AccessibleButton>
             </div>
         );
     },
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index fee48d39d6..35c3144241 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -1140,6 +1140,7 @@
     "Revoke invite": "Revoke invite",
     "Invited by %(sender)s": "Invited by %(sender)s",
     "Jump to first unread message.": "Jump to first unread message.",
+    "Mark all as read": "Mark all as read",
     "Error updating main address": "Error updating main address",
     "There was an error updating the room's main address. It may not be allowed by the server or a temporary failure occurred.": "There was an error updating the room's main address. It may not be allowed by the server or a temporary failure occurred.",
     "Error creating alias": "Error creating alias",