diff --git a/packages/beacon-core/src/utils/multi-tab-channel.ts b/packages/beacon-core/src/utils/multi-tab-channel.ts
index f00b6c84b..726947b19 100644
--- a/packages/beacon-core/src/utils/multi-tab-channel.ts
+++ b/packages/beacon-core/src/utils/multi-tab-channel.ts
@@ -18,9 +18,6 @@ type BCMessage = {
 }
 
 const logger = new Logger('MultiTabChannel')
-const isMobile = typeof window !== 'undefined' ? /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(
-  navigator.userAgent
-) : false
 
 export class MultiTabChannel {
   private id: string = String(Date.now())
@@ -48,6 +45,10 @@ export class MultiTabChannel {
   }
 
   private async init() {
+    const isMobile = typeof window !== 'undefined' ? /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(
+      navigator.userAgent
+    ) : false
+
     if (isMobile) {
       throw new Error('BroadcastChannel is not fully supported on mobile.')
     }