diff --git a/src/Factory.php b/src/Factory.php
index 01c3511..e8a1f81 100644
--- a/src/Factory.php
+++ b/src/Factory.php
@@ -127,7 +127,7 @@ public static function fromFiles(array $files, $returnConfigObject = false)
      *
      * @param string $filename
      * @param array|Config $config
-     * @return boolean TRUE on success | FALSE on failure
+     * @return bool TRUE on success | FALSE on failure
      * @throws Exception\RuntimeException
      * @throws Exception\InvalidArgumentException
      */