diff --git a/src/CssFromHTMLExtractor.php b/src/CssFromHTMLExtractor.php
index 8b99c89..e519ebe 100644
--- a/src/CssFromHTMLExtractor.php
+++ b/src/CssFromHTMLExtractor.php
@@ -56,7 +56,7 @@ public function __construct(Cache $resultCache = null)
         $this->cssConverter = new CssSelectorConverter();
 
         $this->resultCache = is_null($resultCache) ? new ArrayCache() : $resultCache;
-        $this->cachedRules = (array)$resultCache->fetch('cachedRules');
+        $this->cachedRules = (array)$this->resultCache->fetch('cachedRules');
     }
 
     public function getCssStore()