diff --git a/api/services/dataset_service.py b/api/services/dataset_service.py
index 91d9254c67..b8f80a9f77 100644
--- a/api/services/dataset_service.py
+++ b/api/services/dataset_service.py
@@ -252,6 +252,7 @@ class DatasetService:
             data.pop("partial_member_list", None)
             data.pop("external_knowledge_api_id", None)
             data.pop("external_knowledge_id", None)
+            data.pop("external_retrieval_model", None)
             filtered_data = {k: v for k, v in data.items() if v is not None or k == "description"}
             action = None
             if dataset.indexing_technique != data["indexing_technique"]: