diff --git a/DemoPrograms/Demo_GitHub_File_Copier.py b/DemoPrograms/Demo_GitHub_File_Copier.py
index 7627c541..1a4be6ba 100644
--- a/DemoPrograms/Demo_GitHub_File_Copier.py
+++ b/DemoPrograms/Demo_GitHub_File_Copier.py
@@ -251,10 +251,14 @@ def run(app_name, parm=''):
 
 
 def run_py(pyfile, parms=None):
-    if parms is not None:
-        execute_command_subprocess('python', pyfile, parms)
+    if sys.platform == 'linux':
+        cmd = 'python3'
     else:
-        execute_command_subprocess('python', pyfile)
+        cmd = 'python'
+    if parms is not None:
+        execute_command_subprocess(cmd, pyfile, parms)
+    else:
+        execute_command_subprocess(cmd, pyfile)
 
 
 def execute_command_subprocess(command, *args, wait=False):
@@ -262,7 +266,7 @@ def execute_command_subprocess(command, *args, wait=False):
         arg_string = ''
         for arg in args:
             arg_string += ' ' + str(arg)
-        sp = subprocess.Popen(['python3' + arg_string, ], shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        sp = subprocess.Popen([command + arg_string, ], shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     else:
         expanded_args = ' '.join(args)
         sp = subprocess.Popen([command, expanded_args], shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)