1 files changed, 6 insertions, 2 deletions

diff --git a/tests/config/ConfigPhpTest.php b/tests/config/ConfigPhpTest.php
index 67d878ce..7bf9fe64 100644
--- a/tests/config/ConfigPhpTest.php
+++ b/tests/config/ConfigPhpTest.php
@@ -3,15 +3,19 @@ namespace Shaarli\Config;
 
 /**
  * Class ConfigPhpTest
+ *
+ * We run tests in separate processes due to the usage for $GLOBALS
+ * which are kept between tests.
+ * @runTestsInSeparateProcesses
  */
-class ConfigPhpTest extends \PHPUnit\Framework\TestCase
+class ConfigPhpTest extends \Shaarli\TestCase
 {
     /**
      * @var ConfigPhp
      */
     protected $configIO;
 
-    public function setUp()
+    protected function setUp(): void
     {
         $this->configIO = new ConfigPhp();
     }