diff --git a/src/chromium/crBrowser.ts b/src/chromium/crBrowser.ts
index 4d128ecccd..b98ff65df1 100644
--- a/src/chromium/crBrowser.ts
+++ b/src/chromium/crBrowser.ts
@@ -221,10 +221,6 @@ export class CRBrowser extends browser.Browser {
     return Array.from(this._targets.values()).filter(target => target._isInitialized);
   }
 
-  async _activatePage(page: Page) {
-    await (page._delegate as CRFrameManager)._client.send('Target.activateTarget', {targetId: CRTarget.fromPage(page)._targetId});
-  }
-
   async waitForTarget(predicate: (arg0: CRTarget) => boolean, options: { timeout?: number; } | undefined = {}): Promise<CRTarget> {
     const {
       timeout = 30000
diff --git a/src/webkit/wkBrowser.ts b/src/webkit/wkBrowser.ts
index 9def4ba524..042e9498e7 100644
--- a/src/webkit/wkBrowser.ts
+++ b/src/webkit/wkBrowser.ts
@@ -140,17 +140,13 @@ export class WKBrowser extends browser.Browser {
     target._didClose();
   }
 
-  _closePage(page: Page, runBeforeUnload: boolean) {
+  _closePage(targetId: string, runBeforeUnload: boolean) {
     this._connection.send('Target.close', {
-      targetId: WKTarget.fromPage(page)._targetId,
+      targetId,
       runBeforeUnload
     }).catch(debugError);
   }
 
-  async _activatePage(page: Page): Promise<void> {
-    await this._connection.send('Target.activate', { targetId: WKTarget.fromPage(page)._targetId });
-  }
-
   async _onProvisionalTargetCommitted({oldTargetId, newTargetId}) {
     const oldTarget = this._targets.get(oldTargetId);
     const newTarget = this._targets.get(newTargetId);
diff --git a/src/webkit/wkFrameManager.ts b/src/webkit/wkFrameManager.ts
index 9308ee2bc0..2bf9cb5f74 100644
--- a/src/webkit/wkFrameManager.ts
+++ b/src/webkit/wkFrameManager.ts
@@ -343,7 +343,7 @@ export class WKFrameManager implements PageDelegate {
   }
 
   async closePage(runBeforeUnload: boolean): Promise<void> {
-    this._browser._closePage(this._page, runBeforeUnload);
+    this._browser._closePage(this._session._sessionId, runBeforeUnload);
   }
 
   getBoundingBoxForScreenshot(handle: dom.ElementHandle<Node>): Promise<types.Rect | null> {
diff --git a/src/webkit/wkTarget.ts b/src/webkit/wkTarget.ts
index 776540e3b5..795f22ce94 100644
--- a/src/webkit/wkTarget.ts
+++ b/src/webkit/wkTarget.ts
@@ -22,8 +22,6 @@ import { WKTargetSession, WKTargetSessionEvents } from './wkConnection';
 import { WKFrameManager } from './wkFrameManager';
 import { WKBrowser } from './wkBrowser';
 
-const targetSymbol = Symbol('target');
-
 export class WKTarget {
   readonly _browserContext: BrowserContext;
   readonly _targetId: string;
@@ -33,10 +31,6 @@ export class WKTarget {
   private _browser: WKBrowser;
   _frameManager: WKFrameManager | null = null;
 
-  static fromPage(page: Page): WKTarget {
-    return (page as any)[targetSymbol];
-  }
-
   constructor(browser: WKBrowser, session: WKTargetSession, targetInfo: Protocol.Target.TargetInfo, browserContext: BrowserContext) {
     const {targetId, type} = targetInfo;
     this._browser = browser;
@@ -77,7 +71,6 @@ export class WKTarget {
   }
 
   private _adoptPage() {
-    (this._frameManager._page as any)[targetSymbol] = this;
     this._session.once(WKTargetSessionEvents.Disconnected, () => {
       // Once swapped out, we reset _page and won't call _didDisconnect for old session.
       if (this._frameManager)