diff --git a/api/core/app/apps/advanced_chat/generate_task_pipeline.py b/api/core/app/apps/advanced_chat/generate_task_pipeline.py
index 571b3c7936..d3c9f6e812 100644
--- a/api/core/app/apps/advanced_chat/generate_task_pipeline.py
+++ b/api/core/app/apps/advanced_chat/generate_task_pipeline.py
@@ -418,7 +418,7 @@ class AdvancedChatAppGenerateTaskPipeline(BasedGenerateTaskPipeline, WorkflowCyc
         if node_type in [
             NodeType.ANSWER.value,
             NodeType.IF_ELSE.value,
-            NodeType.QUESTION_CLASSIFIER
+            NodeType.QUESTION_CLASSIFIER.value
         ]:
             start_node_id = target_node_id
         elif node_type == NodeType.START.value: