diff --git a/Tests/DotenvTest.php b/Tests/DotenvTest.php
index 9cf3b66..c375efe 100644
--- a/Tests/DotenvTest.php
+++ b/Tests/DotenvTest.php
@@ -322,7 +322,7 @@ public function testOverload()
 
     public function testLoadDirectory()
     {
-        $this->expectException('Symfony\Component\Dotenv\Exception\PathException');
+        $this->expectException(\Symfony\Component\Dotenv\Exception\PathException::class);
         $dotenv = new Dotenv(true);
         $dotenv->load(__DIR__);
     }