diff --git a/api/services/rag_pipeline/rag_pipeline_dsl_service.py b/api/services/rag_pipeline/rag_pipeline_dsl_service.py
index bfbb92a160..09a4e74640 100644
--- a/api/services/rag_pipeline/rag_pipeline_dsl_service.py
+++ b/api/services/rag_pipeline/rag_pipeline_dsl_service.py
@@ -424,7 +424,7 @@ class RagPipelineDslService:
             nodes = graph.get("nodes", [])
             dataset_id = None
             for node in nodes:
-                if node.get("data", {}).get("type") == "knowledge_index":
+                if node.get("data", {}).get("type") == "knowledge-index":
                     knowledge_configuration = KnowledgeConfiguration(**node.get("data", {}))
                     if not dataset:
                         dataset = Dataset(