diff --git a/pupy/modules/lib/utils/shell_exec.py b/pupy/modules/lib/utils/shell_exec.py
index e98666e1..c38e5995 100644
--- a/pupy/modules/lib/utils/shell_exec.py
+++ b/pupy/modules/lib/utils/shell_exec.py
@@ -6,8 +6,6 @@ import subprocess
 
 def shell_exec(client, cmdline, shell=None):
     """ cmdline can be either a list of arguments or a string """
-    if type(cmdline) is not list:
-        cmdline=cmdline.split()
     res=""
     try:
         if client.is_android():
@@ -17,9 +15,9 @@ def shell_exec(client, cmdline, shell=None):
             res=client.conn.modules.subprocess.check_output(cmdline, stderr=subprocess.STDOUT, stdin=subprocess.PIPE, shell=True, universal_newlines=True)
         else:
             if client.is_windows():
-                command=[shell, '/c'] + cmdline
+                command=[shell, '/c', cmdline]
             else:
-                command=[shell, '-c'] + cmdline
+                command=[shell, '-c', cmdline]
             res=client.conn.modules.subprocess.check_output(command, stderr=subprocess.STDOUT, stdin=subprocess.PIPE, universal_newlines=True)
     except Exception as e:
         if hasattr(e,'output') and e.output: