diff --git a/src/EventListener/OrganizationListingTemplateDataListener.php b/src/EventListener/OrganizationListingTemplateDataListener.php
index ee4cdbd..597dbba 100644
--- a/src/EventListener/OrganizationListingTemplateDataListener.php
+++ b/src/EventListener/OrganizationListingTemplateDataListener.php
@@ -17,7 +17,7 @@ class OrganizationListingTemplateDataListener
 {
     public function __construct(
         private readonly Connection $connection,
-        private readonly LoggerInterface $logger,
+        private readonly ?LoggerInterface $logger = null,
     ) {
     }
 
@@ -146,7 +146,7 @@ class OrganizationListingTemplateDataListener
             }
         }
 
-        if ($rowsWithoutTagSlugs > 0) {
+        if (null !== $this->logger && $rowsWithoutTagSlugs > 0) {
             $this->logger->warning('Organization listing tag enrichment left rows without tag slugs.', [
                 'template' => (string) $template->getName(),
                 'totalRows' => \count($tbody),