diff --git a/packages/playwright-core/src/server/webkit/wkPage.ts b/packages/playwright-core/src/server/webkit/wkPage.ts
index e0326072f7..9d482e27e7 100644
--- a/packages/playwright-core/src/server/webkit/wkPage.ts
+++ b/packages/playwright-core/src/server/webkit/wkPage.ts
@@ -713,7 +713,7 @@ export class WKPage implements PageDelegate {
     ];
     if (options.isMobile) {
       const angle = viewportSize.width > viewportSize.height ? 90 : 0;
-      promises.push(this._session.send('Page.setOrientationOverride', { angle }));
+      promises.push(this._pageProxySession.send('Emulation.setOrientationOverride', { angle }));
     }
     await Promise.all(promises);
   }