diff --git a/lib/private/util.php b/lib/private/util.php
index 94508e502e..2a0f9197e3 100755
--- a/lib/private/util.php
+++ b/lib/private/util.php
@@ -5,6 +5,8 @@
  *
  */
 class OC_Util {
+	const USER_AGENT = 'ownCloud Server Crawler';
+	
 	public static $scripts = array();
 	public static $styles = array();
 	public static $headers = array();
@@ -1247,7 +1249,7 @@ class OC_Util {
 			curl_setopt($curl, CURLOPT_URL, $url);
 
 
-			curl_setopt($curl, CURLOPT_USERAGENT, "ownCloud Server Crawler");
+			curl_setopt($curl, CURLOPT_USERAGENT, self::USER_AGENT);
 			if (OC_Config::getValue('proxy', '') != '') {
 				curl_setopt($curl, CURLOPT_PROXY, OC_Config::getValue('proxy'));
 			}
@@ -1269,6 +1271,7 @@ class OC_Util {
 					curl_setopt($rcurl, CURLOPT_NOBODY, true);
 					curl_setopt($rcurl, CURLOPT_FORBID_REUSE, false);
 					curl_setopt($rcurl, CURLOPT_RETURNTRANSFER, true);
+					curl_setopt($rcurl, CURLOPT_USERAGENT, self::USER_AGENT);
 					do {
 						curl_setopt($rcurl, CURLOPT_URL, $newURL);
 						$header = curl_exec($rcurl);
@@ -1303,6 +1306,7 @@ class OC_Util {
 			if (OC_Config::getValue('proxy', '') != '') {
 				$contextArray = array(
 					'http' => array(
+						'header' => 'User-Agent: ' . self::USER_AGENT . "\r\n",
 						'timeout' => 10,
 						'proxy' => OC_Config::getValue('proxy')
 					)
@@ -1310,6 +1314,7 @@ class OC_Util {
 			} else {
 				$contextArray = array(
 					'http' => array(
+						'header' => 'User-Agent: ' . self::USER_AGENT . "\r\n",
 						'timeout' => 10
 					)
 				);