diff --git a/app/task.py b/app/task.py
index 87e9fd6..2247913 100644
--- a/app/task.py
+++ b/app/task.py
@@ -136,7 +136,7 @@ def process_message_callback(
         image_path = get_message_resource(
             client,
             message_dict.get("message_id"),
-            message_dict("image_id"),
+            message_dict.get("image_id"),
             "image",
             cache_dir,
         )