diff --git a/public/src/config.js b/public/src/config.js
index c9babbc..4b5a33d 100644
--- a/public/src/config.js
+++ b/public/src/config.js
@@ -30,7 +30,7 @@ export async function getSystemMessage() {
 	let userLang = "en";
 	try {
 		const storedLang = localStorage.getItem("uncloseai_language");
-		const embedLang = typeof window !== "undefined" && window.UNCLOSEAI_LANGUAGE;
+		const embedLang = (typeof window !== "undefined" && window.UNCLOSEAI_LANGUAGE) ? window.UNCLOSEAI_LANGUAGE : null;
 		userLang = storedLang || embedLang || "en";
 	} catch (error) {
 		console.warn("Failed to read language preference:", error);