diff --git a/vendor/SerialsSolutions/Summon/Zend2.php b/vendor/SerialsSolutions/Summon/Zend2.php
index 174f2c8c96190045de205c8a9ab40321858a75b4..7ee656c15a34b875d37b1bc083f10369aa3acd95 100644
--- a/vendor/SerialsSolutions/Summon/Zend2.php
+++ b/vendor/SerialsSolutions/Summon/Zend2.php
@@ -109,9 +109,7 @@ class Zend2 extends \SerialsSolutions_Summon_Base
             );
         }
 
-        foreach ($headers as $key => $value) {
-            $this->client->setHeaders($key, $value);
-        }
+        $this->client->setHeaders($headers);
 
         // Send Request
         $this->client->setUri($baseUrl);