diff --git a/lam/templates/lib/500_lam.js b/lam/templates/lib/500_lam.js
index b467ceb04..060a3a71a 100644
--- a/lam/templates/lib/500_lam.js
+++ b/lam/templates/lib/500_lam.js
@@ -2072,7 +2072,7 @@ window.lam.webauthn.authenticate = function(publicKey) {
  * @returns base64 string
  */
 window.lam.webauthn.arrayToBase64String = function(input) {
-	return btoa(String.fromCharCode.apply(null, input));
+	return btoa(String.fromCharCode.apply(null, input)).replaceAll("=", "");
 }
 
 /**