diff --git a/setup.py b/setup.py
index 90f84eeb..b806a559 100644
--- a/setup.py
+++ b/setup.py
@@ -22,9 +22,9 @@ ext_mods = [Extension(name='GPy.kern._src.stationary_cython',
                       extra_link_args = ['-lgomp']),
             Extension(name='GPy.util.choleskies_cython',
                       sources=['GPy/util/choleskies_cython.c'],
-                      include_dirs=[np.get_include()]+(['/System/Library/Frameworks/Accelerate.framework/Versions/Current/Frameworks/vecLib.framework/Versions/Current/Headers'] if sys.platform=='darwin' else []),
+                      include_dirs=[np.get_include()],
                       extra_link_args = ['-lgomp'],
-                      extra_compile_args=compile_flags+['-std=c99']),
+                      extra_compile_args=compile_flags),
             Extension(name='GPy.util.linalg_cython',
                       sources=['GPy/util/linalg_cython.c'],
                       include_dirs=[np.get_include()],
@@ -64,7 +64,7 @@ setup(name = 'GPy',
       py_modules = ['GPy.__init__'],
       test_suite = 'GPy.testing',
       long_description=read('README.md'),
-      install_requires=['numpy>=1.7', 'scipy>=0.16', 'cython>=0.22'],
+      install_requires=['numpy>=1.7', 'scipy>=0.16'],
       extras_require = {'docs':['matplotlib >=1.3','Sphinx','IPython']},
       classifiers=['License :: OSI Approved :: BSD License',
                    'Natural Language :: English',