diff --git a/app/assets/javascripts/boards/components/board_sidebar.js b/app/assets/javascripts/boards/components/board_sidebar.js
index 386102032cbae7531a28f0b8ec7b3f4425708b9f..c7afd4ead6bf6e7ae1fd73de48cf5af5c11f412c 100644
--- a/app/assets/javascripts/boards/components/board_sidebar.js
+++ b/app/assets/javascripts/boards/components/board_sidebar.js
@@ -32,9 +32,6 @@ gl.issueBoards.BoardSidebar = Vue.extend({
     showSidebar () {
       return Object.keys(this.issue).length;
     },
-    assigneeId() {
-      return this.issue.assignee ? this.issue.assignee.id : 0;
-    },
     milestoneTitle() {
       return this.issue.milestone ? this.issue.milestone.title : 'No Milestone';
     }