--- a/testing/tps/create_venv.py
+++ b/testing/tps/create_venv.py
@@ -33,19 +33,21 @@ See runtps --help for all options
 
 ***********************************************************************
 """
 virtualenv_url = 'https://raw.github.com/pypa/virtualenv/1.9.1/virtualenv.py'
 
 if sys.platform == 'win32':
     bin_name = os.path.join('Scripts', 'activate.bat')
     activate_env = os.path.join('Scripts', 'activate_this.py')
+    python_env = os.path.join('Scripts', 'python.exe')
 else:
     bin_name = os.path.join('bin', 'activate')
     activate_env = os.path.join('bin', 'activate_this.py')
+    python_env = os.path.join('bin', 'python')
 
 def main():
     parser = optparse.OptionParser('Usage: %prog [options] path_to_venv')
     parser.add_option('-p', '--python',
                       type='string',
                       dest='python',
                       metavar='PYTHON_BIN',
                       default=None,
@@ -60,23 +62,22 @@ def main():
     # Create a virtual environment
     urllib.urlretrieve(virtualenv_url, 'virtualenv.py')
     cmd_args = [sys.executable, 'virtualenv.py', target]
     if options.python:
         cmd_args.extend(['-p', options.python])
     subprocess.check_call(cmd_args)
 
     # Activate tps environment
-
     tps_env = os.path.join(target, activate_env)
     execfile(tps_env, dict(__file__=tps_env))
 
     # Install TPS in environment
-    subprocess.check_call(['python', os.path.join(here, 'setup.py'),
-                           'install'])
+    subprocess.check_call([os.path.join(target, python_env),
+                           os.path.join(here, 'setup.py'), 'install'])
 
     # Get the path to tests and extensions directory by checking check where
     # the tests and extensions directories are located
     sync_dir = os.path.abspath(os.path.join(here, '..', '..', 'services',
                                             'sync'))
     if os.path.exists(sync_dir):
         testdir = os.path.join(sync_dir, 'tests', 'tps')
         extdir = os.path.join(sync_dir, 'tps', 'extensions')