diff --git a/file/lib/action/ChatLeaveAction.class.php b/file/lib/action/ChatLeaveAction.class.php
index 8fc2f89..1cce360 100644
--- a/file/lib/action/ChatLeaveAction.class.php
+++ b/file/lib/action/ChatLeaveAction.class.php
@@ -54,7 +54,7 @@ class ChatLeaveAction extends AbstractAction {
 	 * @see wcf\page\IPage::__run()
 	 */
 	public function __run() {
-		if (($this->request = RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
+		if (($this->request = \wcf\system\request\RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
 		
 		parent::__run();
 	}
diff --git a/file/lib/form/ChatForm.class.php b/file/lib/form/ChatForm.class.php
index 1e87e53..5baedb9 100644
--- a/file/lib/form/ChatForm.class.php
+++ b/file/lib/form/ChatForm.class.php
@@ -82,7 +82,7 @@ class ChatForm extends AbstractForm {
 	 * @see wcf\page\IPage::__run()
 	 */
 	public function __run() {
-		if (($this->request = RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
+		if (($this->request = \wcf\system\request\RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
 		
 		parent::__run();
 	}
diff --git a/file/lib/page/ChatCopyrightPage.class.php b/file/lib/page/ChatCopyrightPage.class.php
index 41f4b00..22ec74e 100644
--- a/file/lib/page/ChatCopyrightPage.class.php
+++ b/file/lib/page/ChatCopyrightPage.class.php
@@ -34,7 +34,7 @@ class ChatCopyrightPage extends AbstractPage {
 	 * @see wcf\page\IPage::__run()
 	 */
 	public function __run() {
-		if (($this->request = RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
+		if (($this->request = \wcf\system\request\RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
 		
 		parent::__run();
 	}
diff --git a/file/lib/page/ChatMessagePage.class.php b/file/lib/page/ChatMessagePage.class.php
index fa1ea84..3301e3a 100644
--- a/file/lib/page/ChatMessagePage.class.php
+++ b/file/lib/page/ChatMessagePage.class.php
@@ -66,7 +66,7 @@ class ChatMessagePage extends AbstractPage {
 	 * @see wcf\page\IPage::__run()
 	 */
 	public function __run() {
-		if (($this->request = RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
+		if (($this->request = \wcf\system\request\RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
 		
 		parent::__run();
 	}
diff --git a/file/lib/page/ChatRefreshRoomListPage.class.php b/file/lib/page/ChatRefreshRoomListPage.class.php
index 0fd25b4..e2ee4fe 100644
--- a/file/lib/page/ChatRefreshRoomListPage.class.php
+++ b/file/lib/page/ChatRefreshRoomListPage.class.php
@@ -48,7 +48,7 @@ class ChatRefreshRoomListPage extends AbstractPage {
 	 * @see wcf\page\IPage::__run()
 	 */
 	public function __run() {
-		if (($this->request = RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
+		if (($this->request = \wcf\system\request\RequestHandler::getInstance()->getActiveRequest()->getRequestObject()) === $this) throw new IllegalLinkException();
 		
 		parent::__run();
 	}