diff --git a/Classes/Connection.php b/Classes/Connection.php
index 5525f677..61a1171a 100644
--- a/Classes/Connection.php
+++ b/Classes/Connection.php
@@ -30,10 +30,8 @@ public static function getClient()
     {
         if (self::$client == null) {
             self::$client = ClientBuilder::create()
-                ->setHosts(
-                    ExtconfService::getInstance()
-                    ->getHostsSettings()
-                )->build();
+                ->setHosts(ExtconfService::getInstance()->getHostsSettings())
+                ->build();
         }
         return self::$client;
     }
@@ -46,6 +44,7 @@ public static function getClient()
     public static function isHealthy()
     {
         $ping = self::getClient()->ping();
+
         return $ping;
     }
 }
diff --git a/Classes/Service/IndexingService.php b/Classes/Service/IndexingService.php
index a3219d0d..09b57454 100644
--- a/Classes/Service/IndexingService.php
+++ b/Classes/Service/IndexingService.php
@@ -309,7 +309,9 @@ protected function applyEnvironment(array $environment): array
     protected function assertConnectionHealthy(): void
     {
         if (!Connection::isHealthy()) {
-            throw new \RuntimeException('Elasticsearch is offline', 1599662577);
+            $hosts = ExtconfService::getInstance()->getHostsSettings();
+
+            throw new \RuntimeException(sprintf('Elasticsearch at "%s" is offline', implode(', ', $hosts)), 1599662577);
         }
     }