diff --git a/apps/desktop/electron/preload.ts b/apps/desktop/electron/preload.ts
index ee7474c..e2d8438 100644
--- a/apps/desktop/electron/preload.ts
+++ b/apps/desktop/electron/preload.ts
@@ -20,4 +20,8 @@ contextBridge.exposeInMainWorld("ipcRenderer", {
     const [channel, ...omit] = args;
     return ipcRenderer.invoke(channel, ...omit);
   },
+  once: (...args: Parameters<typeof ipcRenderer.once>) => {
+    const [channel, ...omit] = args;
+    return ipcRenderer.once(channel, ...omit);
+  },
 });
diff --git a/apps/desktop/src/pages/Datasource/index.tsx b/apps/desktop/src/pages/Datasource/index.tsx
index 9b559cf..1f8ffd5 100644
--- a/apps/desktop/src/pages/Datasource/index.tsx
+++ b/apps/desktop/src/pages/Datasource/index.tsx
@@ -2,37 +2,34 @@ import { Button } from "@/components/ui/button";
 import { useEffect, useState } from "react";
 
 interface ScanProgress {
-  percentage: number
+  percentage: number;
 }
 
 export const Datasource = () => {
-  const [progress, setProgress] = useState<ScanProgress>()
-  const [result, setResult] = useState()
+  const [progress, setProgress] = useState<ScanProgress>();
+  const [result, setResult] = useState();
 
   useEffect(() => {
-    window.ipcRenderer.on('scan-progress', (event, data) => {
-      setProgress(data)
+    const handleScanProgress = (event, data) => {
+      setProgress(data);
       if (data.error) return;
-    });
-
+    };
+    window.ipcRenderer.on("scan-progress", handleScanProgress);
     return () => {
-      window.ipcRenderer.off('scan-progress', () => { });
+      window.ipcRenderer.off("scan-progress", handleScanProgress);
     };
   }, []);
 
   useEffect(() => {
-    window.ipcRenderer.on('scan-progress-done', (event, data) => {
-      console.log('%capps\desktop\src\pages\Datasource\index.tsx:25 data', 'color: #007acc;', data);
-      setResult(data)
+    console.log(1111);
+    const handleScanFinished = (event, data) => {
+      console.log(data);
+      setResult(data);
       if (data.error) return;
-    });
-
-    return () => {
-      window.ipcRenderer.off('scan-progress-done', () => { });
     };
+    window.ipcRenderer.once("scan-progress-done", handleScanFinished);
   }, []);
 
-
   return (
     <div className="p-4">
       <div>