diff -up Crypt_GPG-1.6.0/Crypt/GPG/Engine.php.rpm Crypt_GPG-1.6.0/Crypt/GPG/Engine.php
--- Crypt_GPG-1.6.0/Crypt/GPG/Engine.php.rpm	2017-02-27 10:57:56.809109249 +0100
+++ Crypt_GPG-1.6.0/Crypt/GPG/Engine.php	2017-02-27 10:58:16.432196197 +0100
@@ -1913,6 +1913,9 @@ class Crypt_GPG_Engine
      */
     private function _getBinary()
     {
+        if ($binary = $this->_findBinary('gpg1')) {
+            return $binary;
+        }
         if ($binary = $this->_findBinary('gpg')) {
             return $binary;
         }