diff --git a/lib/cache/sfRawFileCache.class.php b/lib/cache/sfRawFileCache.class.php
index e88e1f3..5cdc8b9 100644
--- a/lib/cache/sfRawFileCache.class.php
+++ b/lib/cache/sfRawFileCache.class.php
@@ -64,7 +64,7 @@ protected function write($path, $data, $timeout)
     if (!is_dir(dirname($path))) 
     {
       // create directory structure if needed
-      mkdir(dirname($path) , 0777, true);
+      mkdir(dirname($path), 0777, true);
     }
     
     $tmpFile = tempnam(dirname($path) , basename($path));
@@ -144,7 +144,7 @@ protected function getGlobPatterns(sfRoute $route)
     $paths        = array();
     for($i=$depth; $i<=$routeOptions['max_folder_depth']; $i++)
     {
-      $paths[] = $pathBase.$pathStart.str_repeat('*/', $i - $depth).'*'.$pathEnd;;
+      $paths[] = $pathBase.$pathStart.str_repeat('*/', $i - $depth).'*'.$pathEnd;
     }
     return $paths;
   }
diff --git a/lib/routing/sfImageTransformRoute.class.php b/lib/routing/sfImageTransformRoute.class.php
index faef258..fe4a782 100644
--- a/lib/routing/sfImageTransformRoute.class.php
+++ b/lib/routing/sfImageTransformRoute.class.php
@@ -171,12 +171,12 @@ public function preassemblePattern($params = array())
   {
     $params = $this->convertObjectToArray($params);
 
-    if(!$params['sf_format'])
+    if(!isset($params['sf_format']))
     {
       $params['sf_format'] = '{jpg,gif,png}';
     }
 
-    if(!$params['format'])
+    if(!isset($params['format']))
     {
       $params['format']    = '{'.implode(',', array_keys(sfConfig::get('thumbnailing_formats'))).'}';
     }