diff --git a/arraycontext/impl/pytato.py b/arraycontext/impl/pytato.py
index 612f4a9368ef0e8b7932b75ced1338e20ea34d34..cb6a58836fd41f830c7f31044566bcac85fc2109 100644
--- a/arraycontext/impl/pytato.py
+++ b/arraycontext/impl/pytato.py
@@ -175,7 +175,7 @@ class AbstractInputDescriptor:
     def __eq__(self, other):
         raise NotImplementedError
 
-    def __hash__(self, other):
+    def __hash__(self):
         raise NotImplementedError