diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 9e59c65a7..908861cf5 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -12,5 +12,9 @@
 
 error_reporting(E_ALL);
 
+if (function_exists('date_default_timezone_set') && function_exists('date_default_timezone_get')) {
+    date_default_timezone_set(@date_default_timezone_get());
+}
+
 require __DIR__.'/../src/bootstrap.php';
 require __DIR__.'/Composer/TestCase.php';