diff --git a/src/key.js b/src/key.js
index a513856e..2ba3b7bf 100644
--- a/src/key.js
+++ b/src/key.js
@@ -377,6 +377,7 @@ Key.prototype.encrypt = function(passphrase) {
   var keys = this.getAllKeyPackets();
   for (var i = 0; i < keys.length; i++) {
     keys[i].encrypt(passphrase);
+    keys[i].clearPrivateMPIs();
   }
 };
 
diff --git a/src/packet/secret_key.js b/src/packet/secret_key.js
index 5fb67b47..b7d5bdf3 100644
--- a/src/packet/secret_key.js
+++ b/src/packet/secret_key.js
@@ -199,7 +199,6 @@ SecretKey.prototype.encrypt = function (passphrase) {
   arr.push(crypto.cfb.normalEncrypt(symmetric, key, cleartext, iv));
 
   this.encrypted = util.concatUint8Array(arr);
-  this.isDecrypted = false;
 };
 
 function produceEncryptionKey(s2k, passphrase, algorithm) {