diff --git a/tests/database/test_db_vasp.py b/tests/database/test_db_vasp.py
index 2a8c51e56..d42b85785 100644
--- a/tests/database/test_db_vasp.py
+++ b/tests/database/test_db_vasp.py
@@ -10,7 +10,7 @@
 __package__ = "database"
 from dpdata import LabeledSystem
 from monty.serialization import loadfn
-from pymatgen.io.vasp import Incar, Kpoints, Poscar, Potcar
+from pymatgen.io.vasp import Kpoints, Poscar, Potcar
 
 from .context import (
     DPPotcar,