diff --git a/bin/generate.py b/bin/generate.py
index ef3e56fd..2179b125 100644
--- a/bin/generate.py
+++ b/bin/generate.py
@@ -845,7 +845,7 @@ def add_testdata_to_cache():
 
             if not generator_up_to_date:
                 # Generate .ans and .interaction if needed.
-                if not config.args.no_solution and testcase.root not in ["invalid_inputs", "invalid_outputs"]:
+                if not config.args.no_solution and testcase.root not in ["invalid_inputs", "invalid_answers"]:
                     if not problem.interactive:
                         # Generate a .ans if not already generated by earlier steps.
                         if not testcase.ans_path.is_file():
@@ -1290,7 +1290,7 @@ def parse(key, name, yaml, parent, listed=True):
             nonlocal testcase_id
             # Skip unlisted `data/bad` directory: we should not generate .ans files there.
             if (
-                name in ['bad', 'invalid_inputs', 'invalid_outputs']
+                name in ['bad', 'invalid_inputs', 'invalid_answers']
                 and parent.path == Path('.')
                 and listed is False
             ):
diff --git a/bin/problem.py b/bin/problem.py
index b7755a5b..69b4b7f1 100644
--- a/bin/problem.py
+++ b/bin/problem.py
@@ -577,7 +577,7 @@ def validate_data(problem, mode:validate.Mode, constraints: dict|bool|None=None)
         Arguments:
             mode: validate.Mode.INPUT | validate.Mode.ANSWER | (not implemented) Validate.Mode.OUTPUT
             constraints: True | dict | None. True means "do check constraints but discard the result."
-            False: TODO is this ever used?
+                False: TODO is this ever used?
         Return:
             True if all validation was successful. Successful validation includes, e.g.,
             correctly rejecting invalid inputs.