Gulp-sourcemaps rewrite mappingUrl

Question

When I write the sourcemap of a file like this:

 gulp.src(paths.scripts.js.input)
    .pipe(sourcemaps.init())
    .pipe(sourcemaps.write('.'))
    .pipe(gulp.dest(paths.scripts.js.dir));

it writes in my .js //# sourceMappingURL=Input.js.map each time the .map is generated.

Is there a way to rewrite the first sourceMappingUrl instead of adding one over and over?

EDIT:

I added the comment in all my .js files and disabled the "addComment" property in gulp-sourcemaps. It works but it's just a workaround.