diff --git a/client/src/components/Chat/Input/Files/AttachFileMenu.tsx b/client/src/components/Chat/Input/Files/AttachFileMenu.tsx
index 43b310401f..4ff7079c73 100644
--- a/client/src/components/Chat/Input/Files/AttachFileMenu.tsx
+++ b/client/src/components/Chat/Input/Files/AttachFileMenu.tsx
@@ -147,7 +147,7 @@ const AttachFileMenu = ({
 
   /** Unified mode: single click triggers file upload with no tool_resource */
   const handleUnifiedUpload = () => {
-    setToolResource(undefined);
+    toolResourceRef.current = undefined;
     handleUploadClick();
   };
 
@@ -318,7 +318,7 @@ const AttachFileMenu = ({
         <FileUpload
           ref={inputRef}
           handleFileChange={(e) => {
-            handleFileChange(e, toolResource);
+            handleFileChange(e, toolResourceRef.current);
           }}
         >
           <TooltipAnchor