diff --git a/config/fcm.php b/config/fcm.php
index 3257f353d..678b87f95 100755
--- a/config/fcm.php
+++ b/config/fcm.php
@@ -1,14 +1,14 @@
 <?php
 
 return [
-    'driver' => env('FCM_PROTOCOL','http'),
-    'log_enabled' => true,
+	'driver'      => env('FCM_PROTOCOL', 'http'),
+	'log_enabled' => true,
 
-    'http' => [
-        'server_key' => env('FCM_SERVER_KEY','Your FCM server key'),
-        'sender_id' => env('FCM_SENDER_ID', 'Your sender id'),
-        'server_send_url' => 'https://fcm.googleapis.com/fcm/send',
-        'server_group_url' => 'https://android.googleapis.com/gcm/notification',
-        'timeout' => 30.0, // in second
-    ]
+	'http' => [
+		'server_key'       => env('FCM_SERVER_KEY', 'Your FCM server key'),
+		'sender_id'        => env('FCM_SENDER_ID', 'Your sender id'),
+		'server_send_url'  => 'https://fcm.googleapis.com/fcm/send',
+		'server_group_url' => 'https://android.googleapis.com/gcm/notification',
+		'timeout'          => 30.0, // in second
+	]
 ];
diff --git a/src/FCMManager.php b/src/FCMManager.php
index 4e3c277ad..3dfdd82cf 100644
--- a/src/FCMManager.php
+++ b/src/FCMManager.php
@@ -1,6 +1,5 @@
 <?php namespace LaravelFCM;
 
-
 use GuzzleHttp\Client;
 use Illuminate\Support\Manager;
 
@@ -8,14 +7,14 @@ class FCMManager extends Manager {
 
 	public function getDefaultDriver()
 	{
-		return $this->app['config']['fcm.driver'];
+		return $this->app[ 'config' ][ 'fcm.driver' ];
 	}
-	
+
 	protected function createHttpDriver()
 	{
-		$config = $this->app['config']->get('fcm.http', []);
-		return new Client([
-			'timeout'  => $config['timeout'],
-		]);
+		$config = $this->app[ 'config' ]->get('fcm.http', []);
+
+		return new Client([ 'timeout' => $config[ 'timeout' ] ]);
 	}
+
 }
\ No newline at end of file
diff --git a/src/FCMServiceProvider.php b/src/FCMServiceProvider.php
index 38bfe5472..de8251513 100644
--- a/src/FCMServiceProvider.php
+++ b/src/FCMServiceProvider.php
@@ -22,26 +22,28 @@ public function boot()
 
 	public function register()
 	{
+		$this->app->singleton('fcm.client', function($app) {
+			return (new FCMManager($app))->driver();
+		});
+
 		$this->app->bind('fcm.group', function($app) {
-			return new FCMGroup();
+			$client = $app[ 'fcm.client' ];
+			$url = $app[ 'config' ]->get('fcm.http.server_group_url');
+
+			return new FCMGroup($client, $url);
 		});
 
 		$this->app->bind('fcm.sender', function($app) {
-			return new FCMSender();
-		});
-		
-		$this->registerClient();
-	}
+			$client = $app[ 'fcm.client' ];
+			$url = $app[ 'config' ]->get('fcm.http.server_send_url');
 
-	public function registerClient()
-	{
-		$this->app->singleton('fcm.client', function($app) {
-			return (new FCMManager($app))->driver();
+			return new FCMSender($client, $url);
 		});
 	}
 
 	protected function provide()
 	{
-		return [ 'fcm.group', 'fcm.sender', 'fcm.client' ];
+		return [ 'fcm.client', 'fcm.group', 'fcm.sender' ];
 	}
+
 }
\ No newline at end of file
diff --git a/src/Sender/BaseSender.php b/src/Sender/BaseSender.php
deleted file mode 100644
index ed412bc0d..000000000
--- a/src/Sender/BaseSender.php
+++ /dev/null
@@ -1,45 +0,0 @@
-<?php namespace LaravelFCM\Sender;
-
-/**
- * Class BaseSender
- *
- * @package LaravelFCM\Sender
- */
-abstract class BaseSender {
-
-	/**
-	 * Guzzle Client
-	 * @var \Illuminate\Foundation\Application|mixed
-	 */
-	protected $client;
-
-	/**
-	 * configuration
-	 * @var array
-	 */
-	protected $config;
-
-	/**
-	 * url
-	 * @var mixed
-	 */
-	protected $url;
-
-	/**
-	 * BaseSender constructor.
-	 */
-	public function __construct()
-	{
-		$this->client = app('fcm.client');
-		$this->config = app('config')->get('fcm.http', []);
-
-		$this->url = $this->getUrl();
-	}
-
-	/**
-	 * get the url
-	 *
-	 * @return string
-	 */
-	protected abstract function getUrl();
-}
\ No newline at end of file
diff --git a/src/Sender/FCMGroup.php b/src/Sender/FCMGroup.php
index 69579076a..cbfad6632 100644
--- a/src/Sender/FCMGroup.php
+++ b/src/Sender/FCMGroup.php
@@ -8,7 +8,7 @@
  *
  * @package LaravelFCM\Sender
  */
-class FCMGroup extends BaseSender {
+class FCMGroup extends HTTPSender {
 	
 	const CREATE = "create";
 	const ADD = "add";
@@ -96,13 +96,4 @@ public function isValidResponse(GuzzleResponse $response)
 		return $response->getReasonPhrase() != 'OK' || $response->getStatusCode() != 200;
 	}
 
-	/**
-	 * get the url
-	 *
-	 * @return string
-	 */
-	protected function getUrl()
-	{
-		return $this->config['server_group_url'];
-	}
 }
\ No newline at end of file
diff --git a/src/Sender/FCMSender.php b/src/Sender/FCMSender.php
index bdcbe36dd..78e744e24 100644
--- a/src/Sender/FCMSender.php
+++ b/src/Sender/FCMSender.php
@@ -15,7 +15,7 @@
  *
  * @package LaravelFCM\Sender
  */
-class FCMSender extends BaseSender {
+class FCMSender extends HTTPSender {
 
 	const MAX_TOKEN_PER_REQUEST = 1000;
 
@@ -37,7 +37,6 @@ public function sendTo($to, Options $options = null, PayloadNotification $notifi
 	{
 		$response = null;
 
-
 		if (is_array($to) && !empty($to)) {
 
 			$partialTokens = array_chunk($to, self::MAX_TOKEN_PER_REQUEST, false);
@@ -96,7 +95,6 @@ public function sendToGroup($notificationKey, Options $options = null, PayloadNo
 	 */
 	public function sendToTopic(Topics $topics, Options $options = null, PayloadNotification $notification = null, PayloadData $data = null)
 	{
-
 		$request = new Request(null, $options, $notification, $data, $topics);
 
 		$responseGuzzle = $this->post($request);
@@ -104,17 +102,6 @@ public function sendToTopic(Topics $topics, Options $options = null, PayloadNoti
 		return new TopicResponse($responseGuzzle, $topics);
 	}
 
-
-	/**
-	 * get the url
-	 *
-	 * @return string
-	 */
-	protected function getUrl()
-	{
-		return $this->config[ 'server_send_url' ];
-	}
-
 	/**
 	 * @internal
 	 *
diff --git a/src/Sender/HTTPSender.php b/src/Sender/HTTPSender.php
new file mode 100644
index 000000000..43b419ced
--- /dev/null
+++ b/src/Sender/HTTPSender.php
@@ -0,0 +1,38 @@
+<?php namespace LaravelFCM\Sender;
+
+use GuzzleHttp\ClientInterface;
+
+/**
+ * Class BaseSender
+ *
+ * @package LaravelFCM\Sender
+ */
+abstract class HTTPSender {
+
+	/**
+	 * The client used to send messages.
+	 *
+	 * @var GuzzleHttp\ClientInterface
+	 */
+	protected $client;
+
+	/**
+	 * The URL entry point.
+	 *
+	 * @var string
+	 */
+	protected $url;
+
+	/**
+	 * Initializes a new sender object.
+	 *
+	 * @param GuzzleHttp\ClientInterface $client
+	 * @param string                     $url
+	 */
+	public function __construct(ClientInterface $client, $url)
+	{
+		$this->client = $client;
+		$this->url = $url;
+	}
+
+}
\ No newline at end of file
diff --git a/tests/DownstreamTest.php b/tests/DownstreamTest.php
index 5e2039890..d6f905815 100644
--- a/tests/DownstreamTest.php
+++ b/tests/DownstreamTest.php
@@ -23,13 +23,10 @@ public function it_send_a_notification_to_a_device()
 
 		$client = Mockery::mock(Client::class);
 		$client->shouldReceive('post')->once()->andReturn($response);
-		$this->app->singleton('fcm.client', function($app) use($client) {
-			return $client;
-		});
 
 		$tokens = 'uniqueToken';
 
-		$fcm = new FCMSender();
+		$fcm = new FCMSender($client, 'http://test.test');
 		$fcm->sendTo($tokens);
 	}
 
@@ -56,16 +53,13 @@ public function it_send_a_notification_to_more_than_1000_devices()
 
 		$client = Mockery::mock(Client::class);
 		$client->shouldReceive('post')->times(10)->andReturn($response);
-		$this->app->singleton('fcm.client', function($app) use($client) {
-			return $client;
-		});
 
 		$tokens = [];
 		for ($i=0 ; $i<10000 ; $i++) {
 			$tokens[$i] = 'token_'.$i;
 		}
 
-		$fcm = new FCMSender();
+		$fcm = new FCMSender($client, 'http://test.test');
 		$fcm->sendTo($tokens);
 	}
 
@@ -91,11 +85,8 @@ public function an_empty_array_of_tokens_thrown_an_exception()
 
 		$client = Mockery::mock(Client::class);
 		$client->shouldReceive('post')->once()->andReturn($response);
-		$this->app->singleton('fcm.client', function($app) use($client) {
-			return $client;
-		});
 
-		$fcm = new FCMSender();
+		$fcm = new FCMSender($client, 'http://test.test');
 		$this->setExpectedException(\LaravelFCM\Response\Exceptions\InvalidRequestException::class);
 		$fcm->sendTo([]);
 	}
diff --git a/tests/FCMTestCase.php b/tests/FCMTestCase.php
index 12eadcbc8..a912fe234 100644
--- a/tests/FCMTestCase.php
+++ b/tests/FCMTestCase.php
@@ -1,13 +1,16 @@
 <?php
 
+use Illuminate\Foundation\Testing\TestCase;
 
-abstract class FCMTestCase extends Illuminate\Foundation\Testing\TestCase {
+abstract class FCMTestCase extends TestCase {
 
 	public function createApplication()
 	{
 		$app = require __DIR__.'/../vendor/laravel/laravel/bootstrap/app.php';
+
 		$app->make(Illuminate\Contracts\Console\Kernel::class)->bootstrap();
 		$app->register(LaravelFCM\FCMServiceProvider::class);
+
 		$app['config']['fcm.driver'] = 'http';
 		$app['config']['fcm.http.timeout'] = 20;
 		$app['config']['fcm.http.server_send_url'] = 'http://test.test';
@@ -16,4 +19,5 @@ public function createApplication()
 
 		return $app;
 	}
+
 }
\ No newline at end of file
diff --git a/tests/GroupResponseTest.php b/tests/GroupResponseTest.php
index e951ce724..26b67357e 100644
--- a/tests/GroupResponseTest.php
+++ b/tests/GroupResponseTest.php
@@ -9,7 +9,6 @@ class GroupResponseTest extends FCMTestCase {
 	 */
 	public function it_construct_a_response_with_successes()
 	{
-
 		$notificationKey = "notificationKey";
 
 		$response = new \GuzzleHttp\Psr7\Response(200, [], '{
@@ -29,7 +28,6 @@ public function it_construct_a_response_with_successes()
 	 */
 	public function it_construct_a_response_with_failures()
 	{
-
 		$notificationKey = "notificationKey";
 
 		$response = new \GuzzleHttp\Psr7\Response(200, [], '{
@@ -55,7 +53,6 @@ public function it_construct_a_response_with_failures()
 	 */
 	public function it_construct_a_response_with_partials_failures()
 	{
-
 		$notificationKey = "notificationKey";
 
 		$response = new \GuzzleHttp\Psr7\Response(200, [], '{
diff --git a/tests/TopicsTest.php b/tests/TopicsTest.php
index b6a267357..33765b3b1 100644
--- a/tests/TopicsTest.php
+++ b/tests/TopicsTest.php
@@ -17,7 +17,6 @@ public function it_throw_an_exception_if_no_topic_is_provided()
 
 		$this->setExpectedException(NoTopicProvidedException::class);
 		$topics->build();
-
 	}
 
 	/**
@@ -32,7 +31,6 @@ public function it_has_only_one_topic()
 		$topics->topic('myTopic');
 
 		$this->assertEquals($target, $topics->build());
-
 	}
 
 	/**
@@ -115,12 +113,8 @@ public function it_send_a_notification_to_a_topic()
 
 		$client = Mockery::mock(Client::class);
 		$client->shouldReceive('post')->once()->andReturn($response);
-		$this->app->singleton('fcm.client', function($app) use($client) {
-			return $client;
-		});
 
-
-		$fcm = new FCMSender();
+		$fcm = new FCMSender($client, 'http://test.test');
 
 		$topics = new Topics();
 		$topics->topic('test');
@@ -141,12 +135,8 @@ public function it_send_a_notification_to_a_topic_and_return_error()
 
 		$client = Mockery::mock(Client::class);
 		$client->shouldReceive('post')->once()->andReturn($response);
-		$this->app->singleton('fcm.client', function($app) use($client) {
-			return $client;
-		});
-
 
-		$fcm = new FCMSender();
+		$fcm = new FCMSender($client, 'http://test.test');
 
 		$topics = new Topics();
 		$topics->topic('test');