diff --git a/ext/openssl/tests/check_default_conf_path.phpt b/ext/openssl/tests/check_default_conf_path.phpt
index f86a06d7968..af8e0dcdd17 100644
--- a/ext/openssl/tests/check_default_conf_path.phpt
+++ b/ext/openssl/tests/check_default_conf_path.phpt
@@ -6,6 +6,8 @@ if (substr(PHP_OS, 0, 3) != 'WIN') {
     die('skip windows only test');
 }
 ?>
+--ENV--
+OPENSSL_CONF=
 --FILE--
 <?php