diff --git a/snappymail/v/0.0.0/app/libraries/snappymail/pgp/pecl.php b/snappymail/v/0.0.0/app/libraries/snappymail/pgp/pecl.php
index 9e0d1e31c..89f72b72a 100644
--- a/snappymail/v/0.0.0/app/libraries/snappymail/pgp/pecl.php
+++ b/snappymail/v/0.0.0/app/libraries/snappymail/pgp/pecl.php
@@ -50,8 +50,8 @@ class PECL implements \SnappyMail\PGP\PGPInterface
 
 	function __destruct()
 	{
-		$this->GnuPG->cleardecryptkeys();
-		$this->GnuPG->clearsignkeys();
+		$this->GnuPG?->cleardecryptkeys();
+		$this->GnuPG?->clearsignkeys();
 	}
 
 	public static function isSupported(): bool