diff --git a/src/Console/Command/WorkerCommand.php b/src/Console/Command/WorkerCommand.php
index b7d978e1..a9652d01 100644
--- a/src/Console/Command/WorkerCommand.php
+++ b/src/Console/Command/WorkerCommand.php
@@ -18,10 +18,10 @@ class WorkerCommand extends AbstractCommand
     public function run(?string $connection = null): void
     {
         $tries = (int) $this->arg->getParameter('--tries', 3);
-        $default = $this->arg->getParameter('--queue', "default");
+        $queue_name = $this->arg->getParameter('--queue', "default");
         $memory = (int) $this->arg->getParameter('--memory', 126);
         $timout = (int) $this->arg->getParameter('--timout', 3);
-        $sleep = (int) $this->arg->getParameter('--sleep', 60);
+        $sleep = (int) $this->arg->getParameter('--sleep', 3);
 
         $queue = app("queue");
 
@@ -31,7 +31,7 @@ public function run(?string $connection = null): void
 
         $worker = $this->getWorderService();
         $worker->setConnection($queue->getAdapter());
-        $worker->run($default, $tries, $sleep, $timout, $memory);
+        $worker->run($queue_name, $tries, $sleep, $timout, $memory);
     }
 
     /**
diff --git a/src/Http/Client/HttpClient.php b/src/Http/Client/HttpClient.php
index d1852598..c905043d 100644
--- a/src/Http/Client/HttpClient.php
+++ b/src/Http/Client/HttpClient.php
@@ -260,7 +260,7 @@ private function addFields(array $data): void
             return;
         }
 
-        if ($this->accept_json) {
+        if ($this->accept_json || $this->hasHeader('content-type', 'application/json')) {
             $payload = json_encode($data);
         } else {
             $payload = http_build_query($data);
@@ -377,12 +377,28 @@ public function setUserAgent(string $user_agent): HttpClient
     /**
      * Configure client to accept and send JSON data
      *
+     * @deprecated 5.2.99
      * @return HttpClient
      */
     public function acceptJson(): HttpClient
     {
         $this->accept_json = true;
 
+        $this->withHeaders(["Content-Type" => "application/json"]);
+        $this->withHeaders(["Accept" => "application/json"]);
+
+        return $this;
+    }
+
+    /**
+     * Configure client to accept and send JSON data
+     *
+     * @return HttpClient
+     */
+    public function withJson(): HttpClient
+    {
+        $this->accept_json = true;
+
         $this->withHeaders(["Content-Type" => "application/json"]);
 
         return $this;
@@ -398,13 +414,25 @@ public function withHeaders(array $headers): HttpClient
     {
         foreach ($headers as $key => $value) {
             if (!in_array(strtolower($key . ': ' . $value), array_map('strtolower', $this->headers))) {
-                $this->headers[] = $key . ': ' . $value;
+                $this->headers[] = trim($key) . ': ' . $value;
             }
         }
 
         return $this;
     }
 
+    /**
+     * Check if header exists
+     *
+     * @param string $key
+     * @param string $value
+     * @return boolean
+     */
+    public function hasHeader(string $key, string $value): bool
+    {
+        return in_array(strtolower($key . ': ' . $value), array_map('strtolower', $this->headers));
+    }
+
     /**
      * Set HTTP authentication credentials
      *
diff --git a/src/Http/UploadedFile.php b/src/Http/UploadedFile.php
index 4ebfdcc4..bfd4ad51 100644
--- a/src/Http/UploadedFile.php
+++ b/src/Http/UploadedFile.php
@@ -41,7 +41,7 @@ public function getExtension(): ?string
         if (!$this->isUploaded()) {
             return null;
         }
-        
+
         if (!isset($this->file['name'])) {
             return null;
         }
diff --git a/src/Queue/Adapters/QueueAdapter.php b/src/Queue/Adapters/QueueAdapter.php
index 68777212..32ca6e81 100644
--- a/src/Queue/Adapters/QueueAdapter.php
+++ b/src/Queue/Adapters/QueueAdapter.php
@@ -297,13 +297,13 @@ public function getQueue(?string $queue = null): string
     }
 
     /**
-     * Watch the queue name
+     * Set the queue name
      *
      * @param string $queue
      */
     public function setQueue(string $queue): void
     {
-        //
+        $this->queue = $queue;
     }
 
     /**