diff --git a/op25Handler.py b/op25Handler.py
index e4230d6..f155116 100644
--- a/op25Handler.py
+++ b/op25Handler.py
@@ -71,8 +71,8 @@ class OP25Handler(threading.Thread):
 
         print(p25_kwargs)
 
-        self.OP25Proc = subprocess.Popen(p25_kwargs, shell=True, executable="/usr/bin/python3", stdin=subprocess.PIPE,
-                                         stdout=subprocess.STDOUT, stderr=subprocess.STDOUT, cwd=self.OP25Dir)
+        self.OP25Proc = subprocess.Popen(p25_kwargs, executable="/usr/bin/python3", shell=False,
+                                         stdout=subprocess.DEVNULL, stderr=subprocess.STDOUT, cwd=self.OP25Dir)
 
         #os.chdir(cwd)