Avoid http:// redirect before https://

[pangeaos]

I'm working to improve the speed on my grails app. I'm getting this message from seositecheckup.com

Your URL performed one redirect! While redirects are typically not advisable (as they can affect search engine indexing issues and adversely affect site loading time), one redirect may be acceptable, particularly if the URL is redirecting from a non-www version to its www version, or vice-versa.
from: http://www.example.com/ to: https://www.example.com/

I have my app on heroku.

my htacces file

RewriteCond %{HTTP_HOST} ^crtalleres\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.crtalleres\.com$
RewriteRule ^(.*)$ "https\:\/\/www\.crtalleres\.com\/$1" [R=301,L]

ApplicationController

@SSLRequired

Is there any idea to avoid that redirect?