diff --git a/boa/src/builtins/json/mod.rs b/boa/src/builtins/json/mod.rs
index 2786475e4b0..84ec927248c 100644
--- a/boa/src/builtins/json/mod.rs
+++ b/boa/src/builtins/json/mod.rs
@@ -99,7 +99,15 @@ pub fn stringify(_: &mut Value, args: &[Value], interpreter: &mut Interpreter) -
                             let mut this_arg = object.clone();
                             object_to_return.set_property(
                                 String::from(key),
-                                Property::default().value(interpreter.call(arg, &mut this_arg, &[Value::string(key), Value::from(value)]).unwrap()),
+                                Property::default().value(
+                                    interpreter
+                                        .call(
+                                            arg,
+                                            &mut this_arg,
+                                            &[Value::string(key), Value::from(value)],
+                                        )
+                                        .unwrap(),
+                                ),
                             );
                         }
                     }
diff --git a/boa/src/builtins/json/tests.rs b/boa/src/builtins/json/tests.rs
index 013e5e7e32a..89c4e2cd718 100644
--- a/boa/src/builtins/json/tests.rs
+++ b/boa/src/builtins/json/tests.rs
@@ -22,7 +22,10 @@ fn json_stringify_remove_undefined_values_from_objects() {
     let realm = Realm::create();
     let mut engine = Executor::new(realm);
 
-    let actual = forward(&mut engine, r#"JSON.stringify({ aaa: undefined, bbb: 'ccc' })"#);
+    let actual = forward(
+        &mut engine,
+        r#"JSON.stringify({ aaa: undefined, bbb: 'ccc' })"#,
+    );
     let expected = r#"{"bbb":"ccc"}"#;
 
     assert_eq!(actual, expected);
@@ -33,7 +36,10 @@ fn json_stringify_remove_function_values_from_objects() {
     let realm = Realm::create();
     let mut engine = Executor::new(realm);
 
-    let actual = forward(&mut engine, r#"JSON.stringify({ aaa: () => {}, bbb: 'ccc' })"#);
+    let actual = forward(
+        &mut engine,
+        r#"JSON.stringify({ aaa: () => {}, bbb: 'ccc' })"#,
+    );
     let expected = r#"{"bbb":"ccc"}"#;
 
     assert_eq!(actual, expected);
diff --git a/boa/src/builtins/value/mod.rs b/boa/src/builtins/value/mod.rs
index 3e76b97c9cc..f4c813f7143 100644
--- a/boa/src/builtins/value/mod.rs
+++ b/boa/src/builtins/value/mod.rs
@@ -686,17 +686,13 @@ impl ValueData {
             Self::Boolean(b) => JSONValue::Bool(b),
             Self::Object(ref obj) => {
                 let mut new_obj = Map::new();
-                obj
-                    .borrow()
-                    .properties
-                    .iter()
-                    .for_each(|(k, _)| {
-                        let key = k.clone();
-                        let value = self.get_field_slice(k);
-                        if !value.is_undefined() && !value.is_function() {
-                            new_obj.insert(key, value.to_json());
-                        }
-                    });
+                obj.borrow().properties.iter().for_each(|(k, _)| {
+                    let key = k.clone();
+                    let value = self.get_field_slice(k);
+                    if !value.is_undefined() && !value.is_function() {
+                        new_obj.insert(key, value.to_json());
+                    }
+                });
                 JSONValue::Object(new_obj)
             }
             Self::String(ref str) => JSONValue::String(str.clone()),