diff --git a/msgpi/utils.py b/msgpi/utils.py
index 14ac633..ea5120c 100644
--- a/msgpi/utils.py
+++ b/msgpi/utils.py
@@ -1,4 +1,5 @@
 import os
+import signal
 import math
 import subprocess as sbp
 import numpy as np
@@ -12,15 +13,15 @@ def run(cmd, timeout, scrnout):
         # sbp.call(cmd)
         proc = sbp.Popen(cmd)
     else:
-        FNULL = open(os.devnull, 'w')
+        #  FNULL = open(os.devnull, 'w')
         # sbp.call(cmd, stdout=FNULL, stderr=sbp.STDOUT)
-        proc = sbp.Popen(cmd, stdout=FNULL, stderr=sbp.STDOUT)
+        proc = sbp.Popen(cmd, stdout=sbp.DEVNULL, stderr=sbp.STDOUT,preexec_fn=os.setsid)
 
     try:
         stdout, stderr = proc.communicate(timeout=timeout)
     except sbp.TimeoutExpired as e:
         print('TimeoutExpired')
-        proc.kill()
+        os.killpg(os.getpgid(proc.pid), signal.SIGTERM)
         print('Process killed')