diff --git a/CHANGELOG.md b/CHANGELOG.md
index 686913b..c8bca2c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 3.0.4 - 2018-10-08
+
+[Full Changelog](https://github.com/netzmacht/contao-leaflet-maps/compare/3.0.3...3.0.4)
+
+### Fixed
+
+ - Fix broken content element attributes (Missing class and custom id).
+
 ## 3.0.3 - 2018-09-18
 
 [Full Changelog](https://github.com/netzmacht/contao-leaflet-maps/compare/3.0.2...3.0.3)
diff --git a/src/Frontend/AbstractMapHybrid.php b/src/Frontend/AbstractMapHybrid.php
index b31c29d..63e1083 100644
--- a/src/Frontend/AbstractMapHybrid.php
+++ b/src/Frontend/AbstractMapHybrid.php
@@ -119,6 +119,8 @@ abstract class AbstractMapHybrid extends AbstractHybrid
      */
     protected function prepareTemplateData(array $data): array
     {
+        $data = parent::prepareTemplateData($data);
+
         try {
             $template = $this->get('leaflet_template') ?: 'leaflet_map_js';
             $mapId    = $this->getIdentifier();