diff --git a/setup.py b/setup.py
index 9edc6a54f1f970fda125e53e268f470079648dec..31a693e453590a0797e9e86020bd14e063034c53 100644
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,6 @@ setup(name='calng',
               'CalibrationManager = calng.CalibrationManager:CalibrationManager'
           ],
       },
-      package_data={'': ['*.cpp']},
+      package_data={'': ['kernels/*']},
       requires=[],
 )