diff --git a/src/Codeception/Module/Mezzio.php b/src/Codeception/Module/Mezzio.php
index 157dd595..2d9614b9 100644
--- a/src/Codeception/Module/Mezzio.php
+++ b/src/Codeception/Module/Mezzio.php
@@ -84,6 +84,9 @@ public function _after(TestInterface $test)
         if (session_status() == PHP_SESSION_ACTIVE) {
             session_write_close();
         }
+        if (isset($_SESSION)) {
+            $_SESSION = [];
+        }
 
         parent::_after($test);
     }