diff --git a/framework/core/js/src/common/models/Discussion.js b/framework/core/js/src/common/models/Discussion.js
index 7310c0ebf..9c12ee1ed 100644
--- a/framework/core/js/src/common/models/Discussion.js
+++ b/framework/core/js/src/common/models/Discussion.js
@@ -23,7 +23,7 @@ Object.assign(Discussion.prototype, {
   posts: Model.hasMany('posts'),
   mostRelevantPost: Model.hasOne('mostRelevantPost'),
 
-  readTime: Model.attribute('readTime', Model.transformDate),
+  lastReadAt: Model.attribute('lastReadAt', Model.transformDate),
   readNumber: Model.attribute('readNumber'),
   isUnread: computed('unreadCount', unreadCount => !!unreadCount),
   isRead: computed('unreadCount', unreadCount => app.session.user && !unreadCount),
diff --git a/framework/core/src/Api/Serializer/DiscussionSerializer.php b/framework/core/src/Api/Serializer/DiscussionSerializer.php
index e741d4682..238ba572a 100644
--- a/framework/core/src/Api/Serializer/DiscussionSerializer.php
+++ b/framework/core/src/Api/Serializer/DiscussionSerializer.php
@@ -57,7 +57,7 @@ class DiscussionSerializer extends BasicDiscussionSerializer
 
         if ($state = $discussion->state) {
             $attributes += [
-                'readTime'   => $this->formatDate($state->last_read_at),
+                'lastReadAt' => $this->formatDate($state->last_read_at),
                 'readNumber' => (int) $state->last_read_post_number
             ];
         }