diff --git a/src/routes/chat/[agentId]/[conversationId]/chat-box.svelte b/src/routes/chat/[agentId]/[conversationId]/chat-box.svelte
index 4a78ec99..af113deb 100644
--- a/src/routes/chat/[agentId]/[conversationId]/chat-box.svelte
+++ b/src/routes/chat/[agentId]/[conversationId]/chat-box.svelte
@@ -375,7 +375,7 @@
 	}
 
 	function initChatView() {
-		isFrame = window.location != window.parent.location;
+		isFrame = window.self != window.top;
 		mode = $page.url.searchParams.get('mode') || '';
 		// initial condition
 		isPersistLogClosed = false;