diff --git a/src/Composer/ComposerPackage.php b/src/Composer/ComposerPackage.php
index fc3bddda0be021a382455c9cce5a0de2716143c7..5912451f5e81a0ceb955174338fbd242f0051477 100644
--- a/src/Composer/ComposerPackage.php
+++ b/src/Composer/ComposerPackage.php
@@ -90,7 +90,7 @@ final class ComposerPackage implements ComposerPackageInterface
 
         $data = $this->getComposerJson();
 
-        return array_key_exists($key, $data) ? $data[$key] : $default;
+        return \array_key_exists($key, $data) ? $data[$key] : $default;
     }
 
     private function getComposerJson(): array
diff --git a/src/Config.php b/src/Config.php
index 64cc023a78c35f86d74e8a0cfb90cd746c1c55e7..085812a5189d70df856413bffb18025ed9c80573 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -73,12 +73,6 @@ final class Config extends PhpCsFixerConfig
         );
     }
 
-    /**
-     * @param float $phpVersion
-     * @param bool  $risky
-     *
-     * @return array
-     */
     private function ruleSets(float $phpVersion, bool $risky): array
     {
         $sets = [