diff --git a/Classes/Service/CategoryService.php b/Classes/Service/CategoryService.php
index d11aa32..a7b1637 100755
--- a/Classes/Service/CategoryService.php
+++ b/Classes/Service/CategoryService.php
@@ -21,7 +21,7 @@ class CategoryService
     public function __construct()
     {
         $this->timeTracker = GeneralUtility::makeInstance(TimeTracker::class);
-        $this->cache = GeneralUtility::makeInstance(CacheManager::class)->getCache('cache_Events_category');
+        $this->cache = GeneralUtility::makeInstance(CacheManager::class)->getCache('events_category');
     }
 
     /**
diff --git a/ext_localconf.php b/ext_localconf.php
index 6899368..1b12074 100644
--- a/ext_localconf.php
+++ b/ext_localconf.php
@@ -32,6 +32,10 @@ call_user_func(
             [\Wrm\Events\Controller\EventController::class => 'list']
         );
 
+        if (!is_array($GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['events_category'])) {
+            $GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['events_category'] = [];
+        }
+
         $iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
         $iconRegistry->registerIcon(
             'events-plugin',