diff --git a/doc/dev/todo/tests b/doc/dev/todo/tests
index 8f019fed..6fcd1a04 100644
--- a/doc/dev/todo/tests
+++ b/doc/dev/todo/tests
@@ -26,3 +26,4 @@ Tests needed:
       run_type_explorer(): ensure environment is setup correctly
 
 
+      all: check that messages of all functions contain target_host in string