1 files changed, 1 insertions, 1 deletions
diff --git a/tests/PHPUnit/proxy/piwik.php b/tests/PHPUnit/proxy/piwik.php
index f1e94930c3..5e542379f6 100755
--- a/tests/PHPUnit/proxy/piwik.php
+++ b/tests/PHPUnit/proxy/piwik.php
@@ -32,7 +32,7 @@ try {
         })
     );
 
-    Environment::addEnvironmentManipulator(new TestingEnvironmentManipulator(new TestingEnvironmentVariables(), $globalObservers));
+    Environment::setGlobalEnvironmentManipulator(new TestingEnvironmentManipulator(new TestingEnvironmentVariables(), $globalObservers));
 
     GeoIp::$geoIPDatabaseDir = 'tests/lib/geoip-files';