diff --git a/composer.json b/composer.json
index 7c2919e..fb57f4d 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
 	"require": {
 		"ext-pcre": "*",
 		"firephp/firephp-core": "~0.4.0",
-		"php": ">=5.2.1",
+		"php": ">=5.3.0",
 		"tubalmartin/cssmin": "~2.4.8",
 		"mrclay/jsmin-php": "~2"
 	},
diff --git a/lib/Minify.php b/lib/Minify.php
index 9b208e3..f99330e 100644
--- a/lib/Minify.php
+++ b/lib/Minify.php
@@ -408,9 +408,9 @@ class Minify {
         $this->cache = new Minify_Cache_Null();
 
         $env = new Minify_Env();
-        $sourceFactory = new Minify_Source_Factory($env, [
+        $sourceFactory = new Minify_Source_Factory($env, array(
             'checkAllowDirs' => false,
-        ], $this->cache);
+        ), $this->cache);
         $controller = new Minify_Controller_Files($env, $sourceFactory);
 
         $options = array_merge($options, array(