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 e41a97d36f..a30165e632 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
@@ -8,7 +8,7 @@ dashedName: iterate-over-all-properties
 
 # --description--
 
-You have now seen two kinds of properties: `own` properties and `prototype` properties. `Own` properties are defined directly on the object instance itself. And `prototype` properties are defined on the `prototype`.
+You have now seen two kinds of properties: <dfn>own properties</dfn> and `prototype` properties. Own properties are defined directly on the object instance itself. And `prototype` properties are defined on the `prototype`.
 
 ```js
 function Bird(name) {
@@ -20,7 +20,7 @@ Bird.prototype.numLegs = 2; // prototype property
 let duck = new Bird("Donald");
 ```
 
-Here is how you add `duck`'s `own` properties to the array `ownProps` and `prototype` properties to the array `prototypeProps`:
+Here is how you add `duck`'s own properties to the array `ownProps` and `prototype` properties to the array `prototypeProps`:
 
 ```js
 let ownProps = [];
@@ -42,7 +42,7 @@ console.log(prototypeProps);
 
 # --instructions--
 
-Add all of the `own` properties of `beagle` to the array `ownProps`. Add all of the `prototype` properties of `Dog` to the array `prototypeProps`.
+Add all of the own properties of `beagle` to the array `ownProps`. Add all of the `prototype` properties of `Dog` to the array `prototypeProps`.
 
 # --hints--