diff --git a/pomodoro_to_harvest.py b/pomodoro_to_harvest.py
index 486e6cc..fed5c67 100644
--- a/pomodoro_to_harvest.py
+++ b/pomodoro_to_harvest.py
@@ -228,6 +228,8 @@ for preferred, alternatives in subproject_names.items():
     alternatives.append(preferred)
     alternatives = [item.lower() for item in alternatives]
     timelog.loc[timelog.subproject.str.lower().isin(alternatives), "subproject"] = preferred
+# TODO flag when task/subproject names are not known, because otherwise they
+# get force-created on import.
 
 # Condense duplicate entries by date, summing the minutes spent, and listing
 # the first started and last recorded times for each task.