diff --git a/file/acp/be.bastelstu.wcf.chat.install.php b/file/acp/be.bastelstu.wcf.chat.install.php
new file mode 100644
index 0000000..f404002
--- /dev/null
+++ b/file/acp/be.bastelstu.wcf.chat.install.php
@@ -0,0 +1,34 @@
+<?php
+namespace be\bastelstu\wcf\chat;
+
+/**
+ * Handles installation of Tims Chat.
+ *
+ * @author 	Tim Düsterhus
+ * @copyright	2010-2012 Tim Düsterhus
+ * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
+ * @package	be.bastelstu.wcf.chat
+ */
+final class Install {
+	/**
+	 * Contains all the styles the current installation has.
+	 * 
+	 * @var array<\wcf\data\style\Style>
+	 */
+	private $styles = null;
+	
+	public function __construct() {
+		$this->styles = \wcf\system\style\StyleHandler::getInstance()->getAvailableStyles();
+	}
+	
+	/**
+	 * Resets styles.
+	 */
+	public function execute() {
+		foreach ($this->styles as $style) {
+			\wcf\system\style\StyleHandler::getInstance()->resetStylesheet($style);
+		}
+	}
+}
+$install = new Install();
+$install->execute();
diff --git a/package.xml b/package.xml
index 5f7cd66..c113864 100644
--- a/package.xml
+++ b/package.xml
@@ -35,6 +35,7 @@
 		<instruction type="acpMenu">acpMenu.xml</instruction>
 		<instruction type="userGroupOption">userGroupOption.xml</instruction>
 		<instruction type="cronjob">cronjob.xml</instruction>
+		<instruction type="script">acp/be.bastelstu.wcf.chat.install.php</instruction>
 	</instructions>
 	
 	<instructions type="update" fromversion="3.0.0 Alpha *">