diff --git a/setup.py b/setup.py
index acce0b95..56199664 100755
--- a/setup.py
+++ b/setup.py
@@ -1,66 +1,66 @@
-#!/usr/bin/env python
+#!/usr/bin/python
 
 import glob
 import os
 
 from distutils.core import setup
 from distutils.extension import Extension
 from setup_pjsip import PJSIP_build_ext
 
 
 def find_packages(root):
     return [directory.replace(os.path.sep, '.') for directory, sub_dirs, files in os.walk(root) if '__init__.py' in files]
 
 
 class PackageInfo(object):
     def __init__(self, info_file):
         with open(info_file) as f:
             exec(f.read(), self.__dict__)
         self.__dict__.pop('__builtins__', None)
 
     def __getattribute__(self, name):  # this is here to silence the IDE about missing attributes
         return super(PackageInfo, self).__getattribute__(name)
 
 
 package_info = PackageInfo(os.path.join('sipsimple', '__info__.py'))
 
 
 setup(
     name=package_info.__project__,
     version=package_info.__version__,
 
     description=package_info.__summary__,
     license=package_info.__license__,
     url=package_info.__webpage__,
 
     author=package_info.__author__,
     author_email=package_info.__email__,
 
     platforms=["Platform Independent"],
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
         "Intended Audience :: Telecommunications Industry",
         "License :: OSI Approved :: GNU General Public License (GPL)",
         "Operating System :: OS Independent",
         "Programming Language :: C",
         "Programming Language :: Cython",
         "Programming Language :: Python"
     ],
 
     packages=find_packages('sipsimple'),
     package_data={
         'sipsimple.payloads': ['xml-schemas/*']
     },
 
     ext_modules=[
         Extension(name="sipsimple.core._core", sources=["sipsimple/core/_core.pyx", "sipsimple/core/_core.pxd"] + glob.glob(os.path.join("sipsimple", "core", "_core.*.pxi"))),
         Extension(name="sipsimple.util._sha1", sources=["sipsimple/util/_sha1.pyx"], depends=["sipsimple/util/_sha1.h"])
     ],
 
     cmdclass={
         'build_ext': PJSIP_build_ext
     },
 
     provides=['sipsimple']
 )