diff --git a/activitysim/abm/models/non_mandatory_tour_frequency.py b/activitysim/abm/models/non_mandatory_tour_frequency.py
index 97a27ece2..d032e3aae 100644
--- a/activitysim/abm/models/non_mandatory_tour_frequency.py
+++ b/activitysim/abm/models/non_mandatory_tour_frequency.py
@@ -331,9 +331,6 @@ def non_mandatory_tour_frequency(
 
         choices_list.append(choices)
 
-    # FIXME only want to keep actual purposes, adding cols in alts will mess this up
-    # this is complicated by canonical_ids calculated based on alts if not specified explicitly
-    # thus, adding column to input alts will change IDs and break estimation mode....
     del alternatives["tot_tours"]  # del tot_tours column we added above
 
     # The choice value 'non_mandatory_tour_frequency' assigned by interaction_simulate