diff --git a/sklearn/setup.py b/sklearn/setup.py
index 6179b01744def..e75d4371811eb 100644
--- a/sklearn/setup.py
+++ b/sklearn/setup.py
@@ -15,6 +15,7 @@ def configuration(parent_package='', top_path=None):
     config = Configuration('sklearn', parent_package, top_path)
 
     config.add_subpackage('__check_build')
+    config.add_subpackage('_build_utils')
     config.add_subpackage('svm')
     config.add_subpackage('datasets')
     config.add_subpackage('datasets/tests')