diff --git a/stack/erp5.cfg b/stack/erp5.cfg
index 23fe101cae87019960e7cc7ec4d526ba378b2c0f..d7997a7061d2a513c0701b1a4c1d66937c485161 100644
--- a/stack/erp5.cfg
+++ b/stack/erp5.cfg
@@ -160,7 +160,7 @@ recipe = plone.recipe.command
 stop-on-error = true
 genbt5list = ${erp5:location}/product/ERP5/bin/genbt5list
 command =
-  ${buildout:executable} ${:genbt5list} ${local-bt5-repository:list}
+  ls -ld ${local-bt5-repository:list} ; ${buildout:executable} ${:genbt5list} ${local-bt5-repository:list}
 update-command = ${:command}
 
 [bootstrap2.6]