diff --git a/src/Robotstxt.php b/src/Robotstxt.php
index ad697fe..5d03084 100644
--- a/src/Robotstxt.php
+++ b/src/Robotstxt.php
@@ -31,9 +31,9 @@ class Robotstxt
     */
   private $sitemaps = array ();
 
-  /** The crawldelay defined in the file (3s if not defined)
+  /** The crawldelay defined in the file
     */
-  private $crawldelay = 3;
+  private $crawldelay = null;
 
   /** The host can be specified as default website
     */
@@ -125,7 +125,7 @@ class Robotstxt
       elseif (stripos ($line, "crawl-delay:") === 0)
       {
         $val = $this->getValueFromLine ($line);
-        if ($val > 1 && $val < 60 && $this->crawldelay === 3)
+        if ($val > 1 && $val < 60 && $this->crawldelay === null)
           $this->crawldelay = intval ($val);
         else
           $this->errors[$i] = dgettext ("domframework",