diff --git a/crates/oxide_vm/src/object.rs b/crates/oxide_vm/src/object.rs
index cf4b8a6f..15821d7b 100644
--- a/crates/oxide_vm/src/object.rs
+++ b/crates/oxide_vm/src/object.rs
@@ -162,7 +162,7 @@ impl JsObject {
         let self_ptr = self as *const JsObject;
         while cursor.is_object() {
             let cursor_ptr = cursor.as_js_object_ptr();
-            if cursor_ptr == self_ptr as *mut JsObject {
+            if std::ptr::eq(cursor_ptr, self_ptr) {
                 return Err("cyclic __proto__ value");
             }
             let obj = unsafe { &*cursor_ptr };
diff --git a/crates/oxide_vm/src/vm.rs b/crates/oxide_vm/src/vm.rs
index 9fb75de0..fd8433b0 100644
--- a/crates/oxide_vm/src/vm.rs
+++ b/crates/oxide_vm/src/vm.rs
@@ -356,7 +356,7 @@ impl Vm {
                         let new_shape_id = shape::make_shape(obj.shape_id(), prop_name_si);
                         obj.set_shape_id(new_shape_id);
                         obj.set_prop_count(new_offset + 1);
-                        obj.set_prop_expand(new_offset, self.regs[a], &self.epoch.bump());
+                        obj.set_prop_expand(new_offset, self.regs[a], self.epoch.bump());
                         obj.bump_generation();
                     }
                 }
@@ -395,7 +395,7 @@ impl Vm {
                         let new_shape_id = shape::make_shape(obj.shape_id(), prop_name_si);
                         obj.set_shape_id(new_shape_id);
                         obj.set_prop_count(new_offset + 1);
-                        obj.set_prop_expand(new_offset, self.regs[b], &self.epoch.bump());
+                        obj.set_prop_expand(new_offset, self.regs[b], self.epoch.bump());
                         obj.bump_generation();
                     }
                 }