diff --git a/api/core/workflow/nodes/tool/tool_node.py b/api/core/workflow/nodes/tool/tool_node.py
index f1897780f2..b0bc1246bd 100644
--- a/api/core/workflow/nodes/tool/tool_node.py
+++ b/api/core/workflow/nodes/tool/tool_node.py
@@ -42,7 +42,7 @@ class ToolNode(BaseNode):
 
         try:
             # TODO: user_id
-            messages = tool_runtime.invoke(None, parameters)
+            messages = tool_runtime.invoke(self.user_id, parameters)
         except Exception as e:
             return NodeRunResult(
                 status=WorkflowNodeExecutionStatus.FAILED,