diff --git a/source/tests/tf/test_deeppot_a.py b/source/tests/tf/test_deeppot_a.py
index c12fd1063b..f40b57c213 100644
--- a/source/tests/tf/test_deeppot_a.py
+++ b/source/tests/tf/test_deeppot_a.py
@@ -804,7 +804,7 @@ def test_convert_012(self):
         convert_pbtxt_to_pb(str(infer_path / "sea_012.pbtxt"), old_model)
         run_dp(f"dp convert-from 0.12 -i {old_model} -o {new_model}")
         dp = DeepPot(new_model)
-        ret = dp.eval(self.coords, self.box, self.atype, atomic=True)
+        _ = dp.eval(self.coords, self.box, self.atype, atomic=True)
         os.remove(old_model)
         os.remove(new_model)
 
@@ -814,7 +814,7 @@ def test_convert(self):
         convert_pbtxt_to_pb(str(infer_path / "sea_012.pbtxt"), old_model)
         run_dp(f"dp convert-from -i {old_model} -o {new_model}")
         dp = DeepPot(new_model)
-        ret = dp.eval(self.coords, self.box, self.atype, atomic=True)
+        _ = dp.eval(self.coords, self.box, self.atype, atomic=True)
         os.remove(old_model)
         os.remove(new_model)