When EPiServer.Search's Score is zero

I got a problem with the search result using EPiServer.Search. The site is in Norwegian and is set to default langauge in site settings in admin.

But the result from the search always gave me 0 for result on the IndexResponseItem Score.
After some digging around I found this code

indexResponseItem.Score = (float.TryParse(RequestHandler.GetAttributeValue(current, SearchSettings.Config.SyndicationItemAttributeNameScore), out num2) ? num2 : 0f);

The quick solution is to change the current culture before one search and set it back after.

var section = ConfigurationManager.GetSection("system.web/globalization") as GlobalizationSection;
var oldCulture = Thread.CurrentThread.CurrentCulture;
if (section!=null )
{
    Thread.CurrentThread.CurrentCulture=CultureInfo.GetCultureInfo(section.UICulture);
}
var res= SearchHandler.Instance.GetSearchResults(groupQuery, 1, maxSize);
Thread.CurrentThread.CurrentCulture = oldCulture;
return res;

I Guess there are more correct ways of doing this, but a solution is better than none :)