diff --git a/communication_subroutine.py b/communication_subroutine.py
index 9313305..faf18fb 100644
--- a/communication_subroutine.py
+++ b/communication_subroutine.py
@@ -61,5 +61,4 @@ def comm_subroutine(comm_q):
     for worker in threads:
         worker.start()
 
-    for worker in threads:
-        worker.join()
+    return threads