diff --git a/doc/api/oauth2.md b/doc/api/oauth2.md
index 31902e145f6ef64934cbb7930bf89b6ba422d9e7..7ce89adc98b763ccaeac2e5484959f4b45054f8d 100644
--- a/doc/api/oauth2.md
+++ b/doc/api/oauth2.md
@@ -35,7 +35,7 @@ Where REDIRECT_URI is the URL in your app where users will be sent after authori
 To request the access token, you should use the returned code and exchange it for an access token. To do that you can use any HTTP client. In this case, I used rest-client:
 
 ```
-parameters = 'client_id=APP_ID&client_secret=APP_SECRET&code=RETURNED_CODE&grant_type=AUTHORIZATION_CODE&redirect_uri=REDIRECT_URI'
+parameters = 'client_id=APP_ID&client_secret=APP_SECRET&code=RETURNED_CODE&grant_type=authorization_code&redirect_uri=REDIRECT_URI'
 RestClient.post 'http://localhost:3000/oauth/token', parameters
 
 # The response will be