How can I change charset in SASS (SCSS)

Question

When working on web projects I'm using css preprocessor SASS with SCSS syntax. In the comments, I like to write what the following code does, I write comments in my language (in czech). Unfortunately, when you compile it throws me the error coding. I'm using for compilation app Koala.

Error msg by compilation:

 Error: Invalid US-ASCII character "\xC5" on line 7 
 of /Users/martinjinda/Documents/www/_welcome_screen/local/sass/main.scss 
 Use --trace for backtrace.

SCSS code:

 // ---------------------------------------------------------------------------
 // Import všech zdrojových souborů a následná kompilace do /css/main.css

 @import 'reset.scss';
 @import 'typo.scss';
 @import 'mixins.scss';
 @import 'layout.scss';
 @import 'content.scss';

Answer 1

Try @charset "UTF-8"; on the beginning of file, before any spaces, comments.