diff --git a/src/backend/app/projects/image_processing.py b/src/backend/app/projects/image_processing.py
index ef500881..741ed571 100644
--- a/src/backend/app/projects/image_processing.py
+++ b/src/backend/app/projects/image_processing.py
@@ -158,7 +158,7 @@ async def process_images_from_s3(self, bucket_name, name=None, options=[]):
             # now update the task as completed in Db.
             await task_logic.update_task_state(
                 self.db,
-                self.project.id,
+                self.project_id,
                 self.task_id,
                 self.user_id,
                 "Task completed.",