diff --git a/crates/oxide_builtins/src/object.rs b/crates/oxide_builtins/src/object.rs
index 3126be3..3e6a694 100644
--- a/crates/oxide_builtins/src/object.rs
+++ b/crates/oxide_builtins/src/object.rs
@@ -288,7 +288,12 @@ pub fn object_define_property<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeResul
     } else {
         if existing_pos.is_none() {
             if vm
-                .define_data_property(obj, si, JsValue::undefined(), PropAttributes::new(false, enumerable, configurable))
+                .define_data_property(
+                    obj,
+                    si,
+                    JsValue::undefined(),
+                    PropAttributes::new(false, enumerable, configurable),
+                )
                 .is_err()
             {
                 return NativeResult::Err(crate::error::create_type_error(vm, "Cannot define property"));
diff --git a/crates/oxide_vm/tests/define_property_descriptor_tests.rs b/crates/oxide_vm/tests/define_property_descriptor_tests.rs
index bd53e7b..fa1d5b7 100644
--- a/crates/oxide_vm/tests/define_property_descriptor_tests.rs
+++ b/crates/oxide_vm/tests/define_property_descriptor_tests.rs
@@ -96,7 +96,11 @@ fn get_own_property_descriptor_accessor_fields() {
 #[test]
 fn define_property_new_attributes_only_defaults_value_undefined() {
     let r = eval_str("var obj={}; Object.defineProperty(obj,'x',{enumerable:true}); obj.x").unwrap();
-    assert!(r.is_undefined(), "new prop with only enumerable should default value to undefined, got {:?}", r);
+    assert!(
+        r.is_undefined(),
+        "new prop with only enumerable should default value to undefined, got {:?}",
+        r
+    );
 }
 
 // -- Partial configurable on existing property preserves value --