diff --git a/src/lib/network.js b/src/lib/network.js
index a5b5a70..e9258cf 100644
--- a/src/lib/network.js
+++ b/src/lib/network.js
@@ -6,8 +6,8 @@ let controlUrl = undefined;
 if(browser)
 {
 	let params = new URLSearchParams("?"+window.location.hash.substr(1));
-	authKey = params.get("authKey");
-	controlUrl = params.get("controlUrl");
+	authKey = params.get("authKey") || undefined;
+	controlUrl = params.get("controlUrl") || undefined;
 }
 let dashboardUrl = controlUrl ? null : "https://login.tailscale.com/admin/machines";
 let resolveLogin = null;