diff --git a/src/anemoi/graphs/edges/attributes.py b/src/anemoi/graphs/edges/attributes.py
index cf71ccd..7be8813 100644
--- a/src/anemoi/graphs/edges/attributes.py
+++ b/src/anemoi/graphs/edges/attributes.py
@@ -165,7 +165,7 @@ def __init__(self) -> None:
         super().__init__(norm=None, dtype="bool")
 
 
-class AttributeFromNode(BooleanBaseEdgeAttribute):
+class AttributeFromNode(ABC, BooleanBaseEdgeAttribute):
     """
     Base class for Attribute from Node.