diff --git a/packages/playwright-core/src/server/dispatchers/frameDispatcher.ts b/packages/playwright-core/src/server/dispatchers/frameDispatcher.ts
index c8fd0c9e24651..b8e69d070d83c 100644
--- a/packages/playwright-core/src/server/dispatchers/frameDispatcher.ts
+++ b/packages/playwright-core/src/server/dispatchers/frameDispatcher.ts
@@ -256,8 +256,6 @@ export class FrameDispatcher extends Dispatcher<Frame, channels.FrameChannel, Br
     const result = await this._frame.expect(metadata, params.selector, { ...params, expectedValue });
     if (result.received !== undefined)
       result.received = serializeResult(result.received);
-    if (result.matches === params.isNot)
-      metadata.error = { error: { name: 'Expect', message: 'Expect failed' } };
     return result;
   }
 }