diff --git a/script/test/test_stream_out.py b/script/test/test_stream_out.py
index fc94d24..2dd1b2c 100644
--- a/script/test/test_stream_out.py
+++ b/script/test/test_stream_out.py
@@ -8,20 +8,21 @@ parameter_queue = queue.Queue()
 statistics=Namespace()
 
 
-OUTPUT_PORT = 12005
+
 
 viewer.show_stream("tcp://localhost:" + str(OUTPUT_PORT))
 
 pipeline_config = PipelineConfig("test_pipeline", parameters={"camera_name": "simulation", "function":"transparent"})
 
-def send():
-    print ("Startint pipeline on port: ", OUTPUT_PORT)
+def send(port):
+    print ("Startint pipeline on port: ", port)
     try:
-        processing_pipeline(stop_event, statistics, parameter_queue, camera_client, pipeline_config, OUTPUT_PORT, MockBackgroundManager())
+        processing_pipeline(stop_event, statistics, parameter_queue, camera_client, pipeline_config, port, MockBackgroundManager())
     except:
         traceback.print_exc()  
 
-thread = Thread(target=send)
+OUTPUT_PORT = 12005
+thread = Thread(target=send, args=(OUTPUT_PORT))
 thread.start()
 
 with source(host="127.0.0.1", port=OUTPUT_PORT, mode=SUB, receive_timeout = 3000) as stream: