diff --git a/poc/flp_generic.py b/poc/flp_generic.py
index d2d04e58..cf698eae 100644
--- a/poc/flp_generic.py
+++ b/poc/flp_generic.py
@@ -661,7 +661,7 @@ class MultiHotHistogram(Valid):
       `0 <= \sum_i x_i <= max_num_bits`.
     """
     # Operational parameters
-    length = None  # Set by `MultiHotHistogram.with_params()`
+    length = None  # Set by the constructor
     max_num_bits = None  # Set by `MultiHotHistogram.with_params()`
     chunk_length = None  # Set by `MultiHotHistogram.with_params()`