diff --git a/tasks/main.yml b/tasks/main.yml
index fb97291..8ff79a8 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -10,6 +10,7 @@
     ssh_host_key_state is defined and
     ssh_host_key_state == 'setup'
 
+# TODO fail when root_target_directory is not defined
 - include: fetch.yml
   when:
     root_target_directory is defined and (