diff --git a/src/vs/platform/url/electron-main/urlService.ts b/src/vs/platform/url/electron-main/urlService.ts
index 5469274fb205381a3320e58e83548277bacf894e..595d3b38c970cb9d7caec4972e5c22a35cf6d4b2 100644
--- a/src/vs/platform/url/electron-main/urlService.ts
+++ b/src/vs/platform/url/electron-main/urlService.ts
@@ -25,7 +25,7 @@ export class URLService implements IURLService {
 			...globalBuffer
 		];
 
-		app.setAsDefaultProtocolClient(product.urlProtocol, process.execPath, ['--open-url']);
+		app.setAsDefaultProtocolClient(product.urlProtocol, process.execPath, ['--open-url', '--']);
 
 		const rawOnOpenUrl = fromNodeEventEmitter(app, 'open-url', (event: Electron.Event, url: string) => ({ event, url }));