diff --git a/deepmd/dpmodel/descriptor/se_t_tebd.py b/deepmd/dpmodel/descriptor/se_t_tebd.py
index 3c972ba29c..cb174896cb 100644
--- a/deepmd/dpmodel/descriptor/se_t_tebd.py
+++ b/deepmd/dpmodel/descriptor/se_t_tebd.py
@@ -379,8 +379,9 @@ def call(
         descriptor
             The descriptor. shape: nf x nloc x (ng x axis_neuron)
         gr
-            The rotationally equivariant and permutationally invariant single particle
-            representation. shape: nf x nloc x ng x 3
+            This descriptor returns None. se_e3_tebd contracts the three-body
+            angular information into a rotationally invariant descriptor and does
+            not expose a separate equivariant single-particle representation.
         g2
             The rotationally invariant pair-partical representation.
             this descriptor returns None
diff --git a/source/tests/pt_expt/descriptor/test_se_t_tebd.py b/source/tests/pt_expt/descriptor/test_se_t_tebd.py
index 41643b41ef..dded75b8d5 100644
--- a/source/tests/pt_expt/descriptor/test_se_t_tebd.py
+++ b/source/tests/pt_expt/descriptor/test_se_t_tebd.py
@@ -91,8 +91,11 @@ def test_consistency(self, prec) -> None:
             self.atype_ext,
             self.nlist,
         )
-        # se_t_tebd should return gr and sw, compare only descriptor and sw for now
-        # TODO: investigate why gr is None
+        # se_t_tebd contracts three-body angular information into a rotationally
+        # invariant descriptor, so it does not expose a separate equivariant
+        # single-particle representation (gr). Compare descriptor and sw here.
+        assert gr1 is None
+        assert gr2 is None
         np.testing.assert_allclose(
             rd1.detach().cpu().numpy(),
             rd2,
@@ -100,14 +103,6 @@ def test_consistency(self, prec) -> None:
             atol=atol,
             err_msg=err_msg,
         )
-        if gr1 is not None and gr2 is not None:
-            np.testing.assert_allclose(
-                gr1.detach().cpu().numpy(),
-                gr2,
-                rtol=rtol,
-                atol=atol,
-                err_msg=err_msg,
-            )
         np.testing.assert_allclose(
             sw1.detach().cpu().numpy(),
             sw2,