diff --git a/app/assets/javascripts/discourse/widgets/topic-timeline.js.es6 b/app/assets/javascripts/discourse/widgets/topic-timeline.js.es6
index 1e5779434c8..ca925d343db 100644
--- a/app/assets/javascripts/discourse/widgets/topic-timeline.js.es6
+++ b/app/assets/javascripts/discourse/widgets/topic-timeline.js.es6
@@ -237,7 +237,7 @@ createWidget('timeline-scrollarea', {
   },
 
   goBack() {
-    this.sendWidgetAction('jumpToPost', this.position().lastRead);
+    this.sendWidgetAction('jumpToIndex', this.position().lastRead);
   }
 });