diff --git a/openpype/modules/slack/plugins/publish/integrate_slack_api.py b/openpype/modules/slack/plugins/publish/integrate_slack_api.py
index 2c6f3d21bd..9539d03306 100644
--- a/openpype/modules/slack/plugins/publish/integrate_slack_api.py
+++ b/openpype/modules/slack/plugins/publish/integrate_slack_api.py
@@ -113,7 +113,7 @@ class IntegrateSlackAPI(pyblish.api.InstancePlugin):
             fill_pairs.append(("review_filepath", review_path))
 
         task_data = (
-                copy.deepcopy(instance.data.get("anatomyData", [])).get("task")
+                copy.deepcopy(instance.data.get("anatomyData", {})).get("task")
                 or fill_data.get("task")
         )
         if not isinstance(task_data, dict):