diff --git a/apps/browser/src/background/main.background.ts b/apps/browser/src/background/main.background.ts
index c7fda5d334..6b92367193 100644
--- a/apps/browser/src/background/main.background.ts
+++ b/apps/browser/src/background/main.background.ts
@@ -192,7 +192,6 @@ export default class MainBackground {
   private tabsBackground: TabsBackground;
   private webRequestBackground: WebRequestBackground;
 
-  private sidebarAction: any;
   private syncTimeout: any;
   private isSafari: boolean;
   private nativeMessagingBackground: NativeMessagingBackground;
@@ -491,11 +490,6 @@ export default class MainBackground {
 
     // Other fields
     this.isSafari = this.platformUtilsService.isSafari();
-    this.sidebarAction = this.isSafari
-      ? null
-      : typeof opr !== "undefined" && opr.sidebarAction
-      ? opr.sidebarAction
-      : (window as any).chrome.sidebarAction;
 
     // Background
     this.runtimeBackground = new RuntimeBackground(