diff --git a/system/libraries/Ftp.php b/system/libraries/Ftp.php
index 1572a58..f213736 100644
--- a/system/libraries/Ftp.php
+++ b/system/libraries/Ftp.php
@@ -22,7 +22,7 @@
  * @subpackage	Libraries
  * @category	Libraries
  * @author		Rick Ellis
- * @link		http://www.codeigniter.com/user_guide/libraries/encryption.html
+ * @link		http://www.codeigniter.com/user_guide/libraries/ftp.html
  */ 
 class CI_FTP {
 
diff --git a/system/libraries/Profiler.php b/system/libraries/Profiler.php
index 1d78da8..5b0f6e2 100644
--- a/system/libraries/Profiler.php
+++ b/system/libraries/Profiler.php
@@ -28,7 +28,7 @@
  * @subpackage	Libraries
  * @category	Libraries
  * @author		Rick Ellis
- * @link		http://www.codeigniter.com/user_guide/libraries/benchmark.html
+ * @link		http://www.codeigniter.com/user_guide/general/profiling.html
  */
 class CI_Profiler {
 
diff --git a/system/libraries/User_agent.php b/system/libraries/User_agent.php
index b217367..8d16067 100644
--- a/system/libraries/User_agent.php
+++ b/system/libraries/User_agent.php
@@ -24,7 +24,7 @@
  * @subpackage	Libraries
  * @category	User Agent
  * @author		Rick Ellis
- * @link		http://www.codeigniter.com/user_guide/libraries/uri.html
+ * @link		http://www.codeigniter.com/user_guide/libraries/user_agent.html
  */
 class CI_User_agent {
 
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index 828ef0c..1ff175f 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -28,7 +28,7 @@
  * @subpackage	Libraries
  * @category	Encryption
  * @author		Rick Ellis
- * @link		http://www.codeigniter.com/user_guide/general/encryption.html
+ * @link		http://www.codeigniter.com/user_guide/libraries/zip.html
  */
 class CI_Zip  {