diff --git a/pyinfra/queue/queue_manager/pika_queue_manager.py b/pyinfra/queue/queue_manager/pika_queue_manager.py
index af65545..c38d91f 100644
--- a/pyinfra/queue/queue_manager/pika_queue_manager.py
+++ b/pyinfra/queue/queue_manager/pika_queue_manager.py
@@ -82,7 +82,7 @@ class PikaQueueManager(QueueManager):
         self.channel.queue_declare(input_queue, arguments=args, auto_delete=False, durable=True)
         self.channel.queue_declare(output_queue, arguments=args, auto_delete=False, durable=True)
 
-    def republish(self, body, n_current_attempts, frame):
+    def republish(self, body: bytes, n_current_attempts, frame):
         self.channel.basic_publish(
             exchange="",
             routing_key=self._input_queue,
@@ -108,10 +108,8 @@ class PikaQueueManager(QueueManager):
         n_attempts = get_n_previous_attempts(properties) + 1
 
         try:
-            body = json.loads(body)
-            response = visitor(body)
-            response = json.dumps(response)
-            self.channel.basic_publish("", self._output_queue, response.encode())
+            response = json.dumps(visitor(json.loads(body))).encode()
+            self.channel.basic_publish("", self._output_queue, response)
             self.channel.basic_ack(frame.delivery_tag)
         except ProcessingFailure:
 
diff --git a/test/unit_tests/consumer_test.py b/test/unit_tests/consumer_test.py
index bff6023..b64e69c 100644
--- a/test/unit_tests/consumer_test.py
+++ b/test/unit_tests/consumer_test.py
@@ -76,10 +76,10 @@ class TestConsumer:
             pass
 
         def callback(_):
-            raise ProcessingFailure()
+            raise ProcessingFailure
 
         def reject_patch(*args, **kwargs):
-            raise DebugError()
+            raise DebugError
 
         queue_manager.reject = reject_patch