1 files changed, 1 insertions, 1 deletions
diff --git a/tests/PHPUnit/TestingEnvironment.php b/tests/PHPUnit/TestingEnvironment.php
index c52556fa7d..98e1566c5d 100644
--- a/tests/PHPUnit/TestingEnvironment.php
+++ b/tests/PHPUnit/TestingEnvironment.php
@@ -249,7 +249,7 @@ class Piwik_TestingEnvironment
                 'contents' => $outputContent
             );
 
-            file_put_contents($outputFile, Common::json_encode($outputContents));
+            file_put_contents($outputFile, json_encode($outputContents));
         });
     }