diff --git a/docs/content/advanced/backend/upgrade-guides/1-7-0.md b/docs/content/advanced/backend/upgrade-guides/1-7-0.md
index 497bec85b1..a5eebd7e95 100644
--- a/docs/content/advanced/backend/upgrade-guides/1-7-0.md
+++ b/docs/content/advanced/backend/upgrade-guides/1-7-0.md
@@ -24,23 +24,23 @@ medusa migrations run
 
 ### Change Used Methods
 
-Instead of using `customerService.retrieveByEmail`, you should now use the methods `customerService.retrieveRegisteredByEmail` or `customerService.retrieveUnRegisteredByEmail`.
+Instead of using `customerService.retrieveByEmail`, you should now use the methods `customerService.retrieveRegisteredByEmail` or `customerService.retrieveUnregisteredByEmail`.
 
 The `customerService.retrieveRegisteredByEmail` method allows you to retrieve a registered customer by email:
 
-```tsx
+```ts
 customerService.retrieveRegisteredByEmail("example@gmail.com");
 ```
 
 On the other hand, the `retrieveUnregisteredByEmail` method allows to retrieve guest customers by email:
 
 ```jsx
-customerService.retrieveUnRegisteredByEmail("example@gmail.com");
+customerService.retrieveUnregisteredByEmail("example@gmail.com");
 ```
 
 To retrieve a customer by email regardless of whether they are registered or not, you can use the `customerService.list` method instead:
 
-```tsx
+```ts
 customerService.list({
   email: "example@gmail.com"
 })