case BuiltinTypeSpec.Type.ULong:
case BuiltinTypeSpec.Type.UShort:
Report.Warning (3009, 1, Location, "`{0}': base type `{1}' is not CLS-compliant",
- GetSignatureForError (), TypeManager.CSharpName (UnderlyingType));
+ GetSignatureForError (), UnderlyingType.GetSignatureForError ());
break;
}