diff --git a/lib/supports.ts b/lib/supports.ts
index 902b61aed..94911b27a 100644
--- a/lib/supports.ts
+++ b/lib/supports.ts
@@ -5,7 +5,7 @@ const webRTCAdapter: typeof webRTCAdapter_import =
 	webRTCAdapter_import.default || webRTCAdapter_import;
 
 export const Supports = new (class {
-	readonly isIOS = ["iPad", "iPhone", "iPod"].includes(navigator.platform);
+	readonly isIOS = typeof navigator !== "undefined" ? (["iPad", "iPhone", "iPod"].includes(navigator.platform)) : false;
 	readonly supportedBrowsers = ["firefox", "chrome", "safari"];
 
 	readonly minFirefoxVersion = 59;