diff --git a/pymatgen/core/periodic_table.py b/pymatgen/core/periodic_table.py
index 3a73b676825..a2da0afd8c5 100644
--- a/pymatgen/core/periodic_table.py
+++ b/pymatgen/core/periodic_table.py
@@ -301,7 +301,7 @@ def ionization_energy(self) -> float:
         """
         First ionization energy of element.
         """
-        return self.ionization_energies[0]
+        return self.ionization_energies[0]  # pylint: disable=E1101
 
     @property
     def electronic_structure(self) -> str: