diff --git a/learn/developers/caching-with-harper.mdx b/learn/developers/caching-with-harper.mdx
index 567ce76e..c8383603 100644
--- a/learn/developers/caching-with-harper.mdx
+++ b/learn/developers/caching-with-harper.mdx
@@ -335,8 +335,7 @@ Here is the complete `resources.js` for this guide:
 // resources.js
 
 const jokeAPI = {
-	async get() {
-		const id = this.getId();
+	async get(id) {
 		const response = await fetch(`https://official-joke-api.appspot.com/jokes/${id}`);
 		return response.json();
 	},