diff --git a/src/pages/overall/overall-course/overall-course.ts b/src/pages/overall/overall-course/overall-course.ts
index 1fc63ad..65c3378 100644
--- a/src/pages/overall/overall-course/overall-course.ts
+++ b/src/pages/overall/overall-course/overall-course.ts
@@ -32,8 +32,8 @@ export default class OverallCourse extends Vue
             // Check success
             if (response.success)
             {
-                this.unreadAssignments = this.unreadAssignments.filter(a => a != assignment);
-                this.unread = this.unreadAssignments.length;
+                // @ts-ignore
+                this.unreadAssignments.find(a => a.id == response.data.assignment_id).unread = false;
             }
             else
             {