diff --git a/tests/PHPUnit/Framework/TestingEnvironmentVariables.php b/tests/PHPUnit/Framework/TestingEnvironmentVariables.php
index 923ac3915224a3f1aea1618d2cc861dec3791ff1..4b33a7fe07932f5e85cb49a4cea51739e3592e3a 100644
--- a/tests/PHPUnit/Framework/TestingEnvironmentVariables.php
+++ b/tests/PHPUnit/Framework/TestingEnvironmentVariables.php
@@ -43,7 +43,9 @@ class TestingEnvironmentVariables
     {
         $includePath = __DIR__ . '/../../..';
 
-        @mkdir($includePath . '/tmp');
+        if(!file_exists($includePath . '/tmp')){
+            mkdir($includePath . '/tmp');
+        }
 
         $overridePath = $includePath . '/tmp/testingPathOverride.json';
         file_put_contents($overridePath, json_encode($this->behaviorOverrideProperties));