diff --git a/setup.py b/setup.py
index cc8afc6760dffe1fb72bc8aa3c816ed2dbb450cc..c2af0c0eb6d5ddc33203d74e50ca1ab11b8b8aa8 100644
--- a/setup.py
+++ b/setup.py
@@ -23,8 +23,8 @@ def setup_package():
     module = 'wetb.fatigue_tools.rainflowcounting'
     names = ['pair_range', 'peak_trough', 'rainflowcount_astm']
     extlist = [Extension('%s.%s' % (module, n),
-                         include_dirs=[np.get_include()],
-                         [os.path.join(path, n)+'.pyx']) for n in names]
+                         [os.path.join(path, n)+'.pyx'],
+                         include_dirs=[np.get_include()]) for n in names]
 
     needs_sphinx = {'build_sphinx', 'upload_docs'}.intersection(sys.argv)
     sphinx = ['sphinx'] if needs_sphinx else []