diff --git a/web/app/components/workflow/nodes/_base/hooks/use-available-var-list.ts b/web/app/components/workflow/nodes/_base/hooks/use-available-var-list.ts
index ca53014948..6f12213d41 100644
--- a/web/app/components/workflow/nodes/_base/hooks/use-available-var-list.ts
+++ b/web/app/components/workflow/nodes/_base/hooks/use-available-var-list.ts
@@ -20,7 +20,7 @@ const useAvailableVarList = (nodeId: string, {
   const isChatMode = useIsChatMode()
 
   const availableNodes = onlyLeafNodeVar ? getTreeLeafNodes(nodeId) : getBeforeNodesInSameBranch(nodeId)
-  const availableVars = toNodeOutputVars(availableNodes, isChatMode, filterVar).map(item => item.vars)
+  const availableVars = toNodeOutputVars(availableNodes, isChatMode, filterVar)
   return availableVars
 }