diff --git a/antivirus_service/consumer.py b/antivirus_service/consumer.py
index e162a49..659b079 100644
--- a/antivirus_service/consumer.py
+++ b/antivirus_service/consumer.py
@@ -11,6 +11,7 @@ def __init__(self, settings, handler):
         self.handler = handler        
         self.amqp_config = settings.config[settings.env]['amqp']
         self.amqp_url = self.amqp_config['url']
+        self.exchange = self.amqp_config['exchange']
         self.amqp_queue = None
 
     def _callback(self, ch, method, properties, body):
@@ -36,7 +37,8 @@ def run(self):
 
         channel = self.connection.channel()
         channel.queue_declare(self.amqp_queue)
-        channel.basic_consume(self.amqp_queue,self._callback)
+        channel.queue_bind(self.amqp_queue, self.exchange)
+        channel.basic_consume(self.amqp_queue, self._callback)
         channel.start_consuming()
 
     def stop(self):
diff --git a/antivirus_service/handler.py b/antivirus_service/handler.py
index 1f44497..b4b3d4f 100644
--- a/antivirus_service/handler.py
+++ b/antivirus_service/handler.py
@@ -69,7 +69,7 @@ def scan(self, download_uri, access_token):
 
     def callback(self, callback_uri, access_token, scan_result, signature):
         logging.info('Start callback')
-        headers = {}
+        headers = {'Content-type': 'application/json'}
         if access_token:
             headers['Authorization'] = 'Bearer %s' % access_token
 
diff --git a/antivirus_service/service.py b/antivirus_service/service.py
index 7e61912..7c039ff 100644
--- a/antivirus_service/service.py
+++ b/antivirus_service/service.py
@@ -38,6 +38,7 @@ def __init__(self, env, debug):
             with env.prefixed(param.upper() + "_"):
                 self.config[self.env][param] = {}
                 self.config[self.env][param]['url'] = env("URL", "amqp://rabbitmq/antivirus")
+                self.config[self.env][param]['exchange'] = env("EXCHANGE", "antivirus")
                 with env.prefixed("SCAN_FILE_"):
                     self.config[self.env][param]['scan_file'] = {}
                     self.config[self.env][param]['scan_file']['queue'] = env("QUEUE", "scan_file")
diff --git a/antivirus_service/webserver.py b/antivirus_service/webserver.py
index 4b37071..74d054a 100644
--- a/antivirus_service/webserver.py
+++ b/antivirus_service/webserver.py
@@ -133,7 +133,7 @@ def send(self, body, routing_key):
         params = pika.URLParameters(self.amqp_config['url'])
         with pika.BlockingConnection(params) as con:
             with con.channel() as channel:
-                channel.basic_publish(body=body, exchange='', routing_key=routing_key)
+                channel.basic_publish(body=body, exchange=self.amqp_config['exchange'], routing_key=routing_key)
 
     @auth_required
     async def handle_version(self, request):