diff --git a/api/app/core/workflow/nodes/knowledge/node.py b/api/app/core/workflow/nodes/knowledge/node.py
index 0601883d..2a8c5249 100644
--- a/api/app/core/workflow/nodes/knowledge/node.py
+++ b/api/app/core/workflow/nodes/knowledge/node.py
@@ -233,7 +233,7 @@ class KnowledgeRetrievalNode(BaseNode):
                         }
                     )
                 )
-            case (RetrieveType.HYBRID, RetrieveType.Graph):
+            case retrieve_type if retrieve_type in (RetrieveType.HYBRID, RetrieveType.Graph):
                 rs1_task = asyncio.to_thread(
                     vector_service.search_by_vector, **{
                         "query": query,