diff --git a/setup.py b/setup.py
index 0fd45e478aef526be9b6dc15a26229a7895bceac..49d494d71b8f1dc3944c60ed0237a6fb5888e76a 100644
--- a/setup.py
+++ b/setup.py
@@ -38,7 +38,7 @@ setup(
     name='European XFEL Offline Calibration',
     version="1.0",
     packages=['cal_tools', 'xfel_calibrate'],
-    package_dir={'cal_tools': 'cal_tools',
+    package_dir={'cal_tools': 'cal_tools/cal_tools',
                  'xfel_calibrate': 'xfel_calibrate',
                  'xfel_calibrate.notebooks': 'xfel_calibrate/notebooks',
                  },