diff --git a/Lib/test/test_types.py b/Lib/test/test_types.py
index 63bc0803e79..2b48e6789b6 100644
--- a/Lib/test/test_types.py
+++ b/Lib/test/test_types.py
@@ -660,7 +660,6 @@ def test_method_descriptor_types(self):
         self.assertIsInstance(int.from_bytes, types.BuiltinMethodType)
         self.assertIsInstance(int.__new__, types.BuiltinMethodType)
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON; TypeError: descriptor 'read' needs a type, not 'StringIO', as arg 2
     def test_method_descriptor_crash(self):
         # gh-132747: The default __get__() implementation in C was unable
         # to handle a second argument of None when called from Python
diff --git a/crates/vm/src/builtins/descriptor.rs b/crates/vm/src/builtins/descriptor.rs
index 537c2e39c9a..5c0662e9fef 100644
--- a/crates/vm/src/builtins/descriptor.rs
+++ b/crates/vm/src/builtins/descriptor.rs
@@ -79,7 +79,10 @@ impl GetDescriptor for PyMethodDescriptor {
         let bound = match obj {
             Some(obj) => {
                 if descr.method.flags.contains(PyMethodFlags::METHOD) {
-                    if cls.is_some_and(|c| c.fast_isinstance(vm.ctx.types.type_type)) {
+                    if cls
+                        .as_ref()
+                        .is_none_or(|c| c.fast_isinstance(vm.ctx.types.type_type))
+                    {
                         obj
                     } else {
                         return Err(vm.new_type_error(format!(