diff --git a/apiserver/plane/bgtasks/issue_activites_task.py b/apiserver/plane/bgtasks/issue_activites_task.py
index d5992256e..bf3d0c91c 100644
--- a/apiserver/plane/bgtasks/issue_activites_task.py
+++ b/apiserver/plane/bgtasks/issue_activites_task.py
@@ -24,7 +24,7 @@ from plane.db.models import (
     Notification,
     IssueAssignee,
 )
-from plane.api.serializers import IssueActivitySerializer, IssueFlatSerializer
+from plane.api.serializers import IssueActivitySerializer
 
 
 # Track Chnages in name