diff --git a/public/API/ebk.php b/public/API/ebk.php
index b4a271400a608e558de443e0fd55ddb1e75d5c82..9ac74d0dfea3ff20907e58a629618a34b00fdb01 100644
--- a/public/API/ebk.php
+++ b/public/API/ebk.php
@@ -8,7 +8,7 @@ $responseJSON = [];
 
 $client = new Client();
 $headers = [
-    'authorization' => 'Basic ' + $ebayKleinanzeigenToken,
+    'authorization' => 'Basic ' . $ebayKleinanzeigenToken,
     'user-agent' => 'okhttp/4.9.1',
     'x-ebayk-app' => '4e10d7fd-6fef-4f87-afb0-b8ede2f494071636475109828',
     'Host' => 'api.ebay-kleinanzeigen.de',