diff --git a/deepmd/tf/descriptor/se_r.py b/deepmd/tf/descriptor/se_r.py
index c34734a8cf..ba24142987 100644
--- a/deepmd/tf/descriptor/se_r.py
+++ b/deepmd/tf/descriptor/se_r.py
@@ -765,9 +765,6 @@ def serialize(self, suffix: str = "") -> dict:
             raise NotImplementedError("spin is unsupported")
         assert self.davg is not None
         assert self.dstd is not None
-        # TODO: tf: handle type embedding in DescrptSeR.serialize
-        # not sure how to handle type embedding - type embedding is not a model parameter,
-        # but instead a part of the input data. Maybe the interface should be refactored...
         return {
             "@class": "Descriptor",
             "type": "se_r",