diff --git a/source/train/argcheck.py b/source/train/argcheck.py
index 931782d30f..2d72340da7 100644
--- a/source/train/argcheck.py
+++ b/source/train/argcheck.py
@@ -60,7 +60,7 @@ def descrpt_se_a_args():
         Argument("rcut", float, optional = True, default = 6.0, doc = doc_rcut),
         Argument("rcut_smth", float, optional = True, default = 0.5, doc = doc_rcut_smth),
         Argument("neuron", list, optional = True, default = [10,20,40], doc = doc_neuron),
-        Argument("axis_neuron", int, optional = True, default = 4, n_axis_neuron = ['n_axis_neuron'], doc = doc_axis_neuron),
+        Argument("axis_neuron", int, optional = True, default = 4, alias = ['n_axis_neuron'], doc = doc_axis_neuron),
         Argument("activation_function", str, optional = True, default = 'tanh', doc = doc_activation_function),
         Argument("resnet_dt", bool, optional = True, default = False, doc = doc_resnet_dt),
         Argument("type_one_side", bool, optional = True, default = False, doc = doc_type_one_side),