Orchard CMS - migrations - UTF8 characters

Question

I'm trying to create a custom content type in orchard module migrations. The code is as follows:

   ContentDefinitionManager.AlterTypeDefinition("Branch",
            cfg => cfg
                .WithPart("Branch")
                .WithPart("AutoroutePart")
                .WithPart("TitlePart")
                .WithPart("CommonPart")
                .WithPart("AddressPart")
                .DisplayedAs("Pobočka")
                .Creatable()
                .Listable()
        );

If I create it like this, the content type has an ugly rhombus instead of my c with a hook. If I specify the name in Admin, it works fine. I guess I need to find out how orchard saves the DisplayedAs property into database, maybe format it correctly?