diff --git a/meanas/fdtd/energy.py b/meanas/fdtd/energy.py
index 9f5c99b..8644646 100644
--- a/meanas/fdtd/energy.py
+++ b/meanas/fdtd/energy.py
@@ -1,3 +1,4 @@
+# pylint: disable=unsupported-assignment-operation
 from typing import List, Callable, Tuple, Dict
 import numpy