diff --git a/file/lib/data/chat/message/ChatMessage.class.php b/file/lib/data/chat/message/ChatMessage.class.php
index a94bdce..ac50043 100755
--- a/file/lib/data/chat/message/ChatMessage.class.php
+++ b/file/lib/data/chat/message/ChatMessage.class.php
@@ -103,6 +103,7 @@ public function jsonify($raw = false) {
 			'formattedUsername' => $this->getFormattedUsername(),
 			'formattedMessage' => (string) $this,
 			'formattedTime' => \wcf\util\DateUtil::format(\wcf\util\DateUtil::getDateTimeByTimestamp($this->time), 'H:i:s'),
+			'separator' => ($this->type == self::TYPE_NORMAL) ? ': ' : ' ',
 			'sender' => $this->sender,
 			'username' => $this->getUsername(),
 			'time' => $this->time,
diff --git a/template/chatMessage.tpl b/template/chatMessage.tpl
index 466534a..b3566fb 100644
--- a/template/chatMessage.tpl
+++ b/template/chatMessage.tpl
@@ -1 +1 @@
-{literal}<dl style="margin: 0;"><dt style="width: 145px; margin: 0;"><time style="float: left;">{@$formattedTime}</time> {@$formattedUsername}</dt> <dd style="padding: 0; margin-left: 150px;">{@$formattedMessage}</dd></dl>{/literal}
+{literal}<dl style="margin: 0;"><dt style="width: 145px; margin: 0;"><time style="float: left;">{@$formattedTime}</time> {@$formattedUsername}{$separator}</dt> <dd style="padding: 0; margin-left: 150px;">{@$formattedMessage}</dd></dl>{/literal}