diff --git a/config.php b/config.php
index ed89760..81ef275 100644
--- a/config.php
+++ b/config.php
@@ -51,7 +51,7 @@ return [
     ],
 
     'queue' => [
-        'broker' => Env::get('QUEUE_BROKER', 'kafka'),
+        'broker' => Env::get('QUEUE_BROKER', 'redis'),
 
         'broker_config' => [
 
@@ -61,6 +61,7 @@ return [
 
             'kafka' => [
                 'brokers' => Env::get('QUEUE_KAFKA_BROKERS', 'kafka:9092'),
+                'consumerGroup' => Env::get('QUEUE_KAFKA_CONSUMER_GROUP', 'default_group'),
             ],
 
             'rabbitmq' => [
diff --git a/src/Async/Brokers/Kafka.php b/src/Async/Brokers/Kafka.php
index fc0c8b3..95f30fc 100644
--- a/src/Async/Brokers/Kafka.php
+++ b/src/Async/Brokers/Kafka.php
@@ -24,12 +24,12 @@ class Kafka extends Broker
 
         $conf = new Conf();
         $conf->set('bootstrap.servers', $config['brokers'] ?? 'localhost:9092');
+
         $this->producer = new Producer($conf);
         $this->producer->addBrokers($config['brokers'] ?? 'localhost:9092');
 
         $conf->set('group.id', $config['consumerGroup'] ?? 'default');
         $conf->set('auto.offset.reset', 'earliest');
-
         $this->consumer = new KafkaConsumer($conf);
     }
 
@@ -60,6 +60,7 @@ class Kafka extends Broker
             return null;
         }
 
+        /** @var string | null $messageData */
         $messageData = $kafkaMessage->payload;
         if ($messageData !== null) {
             /** @var Message $message */