diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/iterate-over-all-properties.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/iterate-over-all-properties.md
index a9650a8201..bc6aa77d26 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/iterate-over-all-properties.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/iterate-over-all-properties.md
@@ -44,16 +44,16 @@ Add all of the `own` properties of `beagle` to the array `ownProps`. Add all of
 
 # --hints--
 
-The `ownProps` array should include `"name"`.
+The `ownProps` array should only contain `"name"`.
 
 ```js
-assert(ownProps.indexOf('name') !== -1);
+assert.deepEqual(ownProps, ['name']);
 ```
 
-The `prototypeProps` array should include `"numLegs"`.
+The `prototypeProps` array should only contain `"numLegs"`.
 
 ```js
-assert(prototypeProps.indexOf('numLegs') !== -1);
+assert.deepEqual(prototypeProps, ['numLegs']);
 ```
 
 You should solve this challenge without using the built in method `Object.keys()`.