diff --git a/api/core/workflow/nodes/list_operator/node.py b/api/core/workflow/nodes/list_operator/node.py
index ae9401b056..e9a87f2b25 100644
--- a/api/core/workflow/nodes/list_operator/node.py
+++ b/api/core/workflow/nodes/list_operator/node.py
@@ -188,7 +188,7 @@ class ListOperatorNode(BaseNode):
         if len(variable.value) > int(value):
             result = variable.value[value]
         else:
-            result = ""
+            result = {}
         return variable.model_copy(update={"value": [result]})