diff --git a/setup.py b/setup.py
index b371a56ae..e3846d31f 100644
--- a/setup.py
+++ b/setup.py
@@ -115,36 +115,6 @@ def generate_cython(root, source):
         raise RuntimeError('Running cythonize failed')
 
 
-def import_include(module_name):
-    try:
-        return __import__(module_name, globals(), locals(), [], 0)
-    except ImportError:
-        raise ImportError('Unable to import %s. Create a virtual environment '
-                          'and install all dependencies from requirements.txt, '
-                          'e.g., run "pip install -r requirements.txt".' % module_name)
-
-
-def copy_include(src, dst, path):
-    assert os.path.isdir(src)
-    assert os.path.isdir(dst)
-    shutil.copytree(
-        os.path.join(src, path),
-        os.path.join(dst, path))
-
-
-def prepare_includes(path):
-    include_dir = os.path.join(path, 'include')
-    if os.path.exists(include_dir):
-        shutil.rmtree(include_dir)
-    os.mkdir(include_dir)
-
-    numpy = import_include('numpy')
-    copy_include(numpy.get_include(), include_dir, 'numpy')
-
-    murmurhash = import_include('murmurhash')
-    copy_include(murmurhash.get_include(), include_dir, 'murmurhash')
-
-
 def is_source_release(path):
     return os.path.exists(os.path.join(path, 'PKG-INFO'))
 
@@ -194,7 +164,6 @@ def setup_package():
 
         if not is_source_release(root):
             generate_cython(root, 'spacy')
-            prepare_includes(root)
 
         setup(
             name=about['__name__'],