diff --git a/phpseclib/Crypt/EC/Formats/Keys/PKCS8.php b/phpseclib/Crypt/EC/Formats/Keys/PKCS8.php
index b678545e..fa7ed457 100644
--- a/phpseclib/Crypt/EC/Formats/Keys/PKCS8.php
+++ b/phpseclib/Crypt/EC/Formats/Keys/PKCS8.php
@@ -223,7 +223,7 @@ abstract class PKCS8 extends Progenitor
                 null,
                 $password,
                 $curve instanceof Ed25519 ? 'id-Ed25519' : 'id-Ed448',
-                $curve->encodePoint($publicKey)
+                "\0" . $curve->encodePoint($publicKey)
             );
         }