diff --git a/workers/file_processing/structure_tool_task.py b/workers/file_processing/structure_tool_task.py
index 971a783980..23a1ba8eb2 100644
--- a/workers/file_processing/structure_tool_task.py
+++ b/workers/file_processing/structure_tool_task.py
@@ -479,6 +479,7 @@ def _execute_structure_tool_impl(params: dict) -> dict:
             "execution_id": execution_id,
             "PLATFORM_SERVICE_API_KEY": platform_service_api_key,
             "group_key": at_settings.get("group_key", ""),
+            "enable_header_mapping": at_settings.get("enable_header_mapping", False),
             # Set on the output at export by prompt_studio_registry_helper.py
             # when a lookup is assigned; None otherwise.
             "lookup_config": at_output.get("lookup_config"),