diff --git a/src/Util/Crypto.php b/src/Util/Crypto.php
index c63149e5f..677697b1e 100644
--- a/src/Util/Crypto.php
+++ b/src/Util/Crypto.php
@@ -6,6 +6,7 @@ namespace Friendica\Util;
 
 use Friendica\Core\Config;
 use ASN_BASE;
+use ASNValue;
 
 require_once 'library/ASNValue.class.php';
 require_once 'library/asn1.php';