diff --git a/src/Payline/PaylineSDK.php b/src/Payline/PaylineSDK.php
index 861b891..163e2a5 100644
--- a/src/Payline/PaylineSDK.php
+++ b/src/Payline/PaylineSDK.php
@@ -380,7 +380,6 @@ public function __construct($merchant_id, $access_key, $proxy_host, $proxy_port,
             $merchant_id = (string) $merchant_id;
         }
 
-        date_default_timezone_set($defaultTimezone);
         if ($externalLogger) {
             $this->logger = $externalLogger;
         } else {