diff --git a/lang/js/DemoExtension/maindemo.js b/lang/js/DemoExtension/maindemo.js
index 97a27f60..b472bcc8 100644
--- a/lang/js/DemoExtension/maindemo.js
+++ b/lang/js/DemoExtension/maindemo.js
@@ -29,7 +29,7 @@ document.addEventListener('DOMContentLoaded', function () {
             function (){
                 let data = document.getElementById('inputtext').value;
                 let keyId = document.getElementById('pubkey').value;
-                gpgmejs.encrypt({ data: data, privateKeys: keyId }).then(
+                gpgmejs.encrypt({ data: data, publicKeys: keyId, armor:false }).then(
                     function (answer){
                         if (answer.data){
                             document.getElementById(
diff --git a/lang/js/src/gpgmejs.js b/lang/js/src/gpgmejs.js
index 08f80fc2..295cc043 100644
--- a/lang/js/src/gpgmejs.js
+++ b/lang/js/src/gpgmejs.js
@@ -154,8 +154,12 @@ export class GpgME {
         if (msg instanceof Error){
             return Promise.reject(msg);
         }
-        msg.setParameter('armor', armor);
-
+        if (armor === false){
+            msg.setParameter('armor', false);
+            msg.expected = 'base64';
+        } else if (armor === true) {
+            msg.setParameter('armor', true);
+        }
         if (base64 === true) {
             msg.setParameter('base64', true);
         }