diff --git a/mpcdf_setup_subproject.py b/mpcdf_setup_subproject.py
index 9de847080723542f7f47614d05f19ec4b6b2ab59..eb19a1d1838bf0f96f30a9f35db9443633687723 100644
--- a/mpcdf_setup_subproject.py
+++ b/mpcdf_setup_subproject.py
@@ -12,7 +12,7 @@ import osc.cmdln
 @osc.cmdln.option('-n', '--dry-run', action="store_true",
                   help="Do not actually run anything but output the resulting XML configuration")
 @osc.cmdln.option('--only-project', action="store_true",
-                  help="Do not actually run anything but output the resulting XML configuration")
+                  help="Only change project metadata, do not iterate over packages and change their enabled repositories")
 @osc.cmdln.option('--remove-old', action="store_true", default=False,
                   help="Remove all obsolete repositories instead of only disabling builds for packages there")
 @osc.cmdln.alias("mpcdf_setup_sub")