diff --git a/src/Symfony/Component/Intl/Tests/Util/GitRepositoryTest.php b/src/Symfony/Component/Intl/Tests/Util/GitRepositoryTest.php
index c727e500bb..a47495f6a5 100644
--- a/src/Symfony/Component/Intl/Tests/Util/GitRepositoryTest.php
+++ b/src/Symfony/Component/Intl/Tests/Util/GitRepositoryTest.php
@@ -45,7 +45,7 @@ class GitRepositoryTest extends TestCase
             $this->setExpectedException(RuntimeException::class);
         }
 
-        @mkdir($this->targetDir, '0777', true);
+        @mkdir($this->targetDir, 0777, true);
 
         new GitRepository($this->targetDir);
     }