diff --git a/src/Igorw/Silex/YamlConfigDriver.php b/src/Igorw/Silex/YamlConfigDriver.php
index 5b849a9..7f433a5 100644
--- a/src/Igorw/Silex/YamlConfigDriver.php
+++ b/src/Igorw/Silex/YamlConfigDriver.php
@@ -11,7 +11,10 @@ public function load($filename)
         if (!class_exists('Symfony\\Component\\Yaml\\Yaml')) {
             throw new \RuntimeException('Unable to read yaml as the Symfony Yaml Component is not installed.');
         }
-        $config = Yaml::parse($filename);
+        if(!file_exists($filename)){
+            throw new \RuntimeException(sprintf('file not found: %s', $filename));
+        }
+        $config = Yaml::parse(file_get_contents($filename));
         return $config ?: array();
     }