diff --git a/src/codegen/generate-classes.ts b/src/codegen/generate-classes.ts
index 10567dc130..c1d7c9447d 100644
--- a/src/codegen/generate-classes.ts
+++ b/src/codegen/generate-classes.ts
@@ -251,14 +251,14 @@ function propRow(
   } else if (getter && setter) {
     return `
     
-{ "${name}"_s, static_cast<unsigned>(JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::DOMAttribute${extraPropertyAttributes}), NoIntrinsic, { HashTableValue::GetterSetterType, ${getter}, ${setter} } }
+{ "${name}"_s, static_cast<unsigned>(JSC::PropertyAttribute::CustomAccessor ${extraPropertyAttributes}), NoIntrinsic, { HashTableValue::GetterSetterType, ${getter}, ${setter} } }
 `.trim();
   } else if (defaultValue) {
   } else if (getter) {
-    return `{ "${name}"_s, static_cast<unsigned>(JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::DOMAttribute${extraPropertyAttributes}), NoIntrinsic, { HashTableValue::GetterSetterType, ${getter}, 0 } }
+    return `{ "${name}"_s, static_cast<unsigned>(JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::CustomAccessor ${extraPropertyAttributes}), NoIntrinsic, { HashTableValue::GetterSetterType, ${getter}, 0 } }
 `.trim();
   } else if (setter) {
-    return `{ "${name}"_s, static_cast<unsigned>(JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::DOMAttribute${extraPropertyAttributes}), NoIntrinsic, { HashTableValue::GetterSetterType, 0, ${setter} } }
+    return `{ "${name}"_s, static_cast<unsigned>(JSC::PropertyAttribute::CustomAccessor ${extraPropertyAttributes}), NoIntrinsic, { HashTableValue::GetterSetterType, 0, ${setter} } }
   `.trim();
   }