If a config class was loaded first then a library with the same name is loaded, the config would be ignored.
diff --git a/system/core/Loader.php b/system/core/Loader.php
index 7c8b298..1802424 100644
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -935,22 +935,22 @@
 					// first, global next
 					if (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'))
 					{
-						include_once($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
+						include($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
 						break;
 					}
 					elseif (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php'))
 					{
-						include_once($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
+						include($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
 						break;
 					}
 					elseif (file_exists($path .'config/'.strtolower($class).'.php'))
 					{
-						include_once($path .'config/'.strtolower($class).'.php');
+						include($path .'config/'.strtolower($class).'.php');
 						break;
 					}
 					elseif (file_exists($path .'config/'.ucfirst(strtolower($class)).'.php'))
 					{
-						include_once($path .'config/'.ucfirst(strtolower($class)).'.php');
+						include($path .'config/'.ucfirst(strtolower($class)).'.php');
 						break;
 					}
 				}
diff --git a/user_guide/changelog.html b/user_guide/changelog.html
index 9fbadbf..77f942b 100644
--- a/user_guide/changelog.html
+++ b/user_guide/changelog.html
@@ -112,6 +112,7 @@
 	<li class="reactor">Fixed a bug where using <kbd>$this->db->select_max()</kdb>, <kbd>$this->db->select_min()</kdb>, etc could throw notices. Thanks to w43l for the patch.</li>
 	<li class="reactor">Fixed a bug where <a href="libraries/email.html">Email library</a> attachments with a "." in the name would using invalid MIME-types.</li>
 	<li class="reactor">Fixed #378 Robots identified as regular browsers by the User Agent class.</li>
+	<li class="reactor">If a config class was loaded first then a library with the same name is loaded, the config would be ignored.</li>
 </ul>
 
 <h2>Version 2.0.2</h2>