diff --git a/src/MDMailerHelper.php b/src/MDMailerHelper.php
index 9c2c28d..612b0d8 100644
--- a/src/MDMailerHelper.php
+++ b/src/MDMailerHelper.php
@@ -38,7 +38,7 @@ final class MDMailerHelper {
 
         }
 
-        if (($gpg->addsignkey(MD_CONF_EMAIL::PGP_ENC_KEY)) === false) {
+        if ($gpg->addsignkey(MD_CONF_EMAIL::PGP_ENC_KEY) === false) {
             throw new \Exception("Cannot set private key for GPG encryption");
         }