diff --git a/lib/ash/filter/filter.ex b/lib/ash/filter/filter.ex
index 54feb9b9..5ef68964 100644
--- a/lib/ash/filter/filter.ex
+++ b/lib/ash/filter/filter.ex
@@ -345,7 +345,7 @@ defmodule Ash.Filter do
       refs
       |> Enum.flat_map(fn
         %{attribute: attribute, relationship_path: relationship_path}
-        when is_atom(attribute) || is_binary(attribute) ->
+        when is_atom(attribute) or is_binary(attribute) ->
           [
             NoSuchAttributeOrRelationship.exception(
               attribute_or_relationship: attribute,