diff --git a/file/lib/data/message/MessageAction.class.php b/file/lib/data/message/MessageAction.class.php
index dfae9fa..dff95f8 100644
--- a/file/lib/data/message/MessageAction.class.php
+++ b/file/lib/data/message/MessageAction.class.php
@@ -63,7 +63,7 @@ public function validateSend() {
 		$this->parameters['enableHTML'] = false;
 		
 		// validate text
-		if (StringUtil::length($this->parameters['text']) > CHAT_MAX_LENGTH) throw new UserInputException('text', 'tooLong');
+		if (\wcf\util\StringUtil::length($this->parameters['text']) > CHAT_MAX_LENGTH) throw new UserInputException('text', 'tooLong');
 		
 		// search for disallowed bbcodes
 		$disallowedBBCodes = \wcf\system\bbcode\BBCodeParser::getInstance()->validateBBCodes($this->parameters['text'], explode(',', WCF::getSession()->getPermission('user.chat.allowedBBCodes')));
diff --git a/file/style/be.bastelstu.wcf.chat.less b/file/style/be.bastelstu.wcf.chat.less
index bbc310e..85ec593 100644
--- a/file/style/be.bastelstu.wcf.chat.less
+++ b/file/style/be.bastelstu.wcf.chat.less
@@ -64,6 +64,7 @@
 						text-align: right;
 						min-width: 100px;
 						padding: 0px 5px;
+						white-space: nowrap;
 					}
 				}