QDirIterator (Windows) should be case insensitive but not

I have a directory with 2 files: Test1.txt and test2.txt

This code should list me the two files:

QDirIterator *it;
QStringList nameFilters;
nameFilters << "t*.txt";
QString path = "C:/temp/test";
qDebug() << "nameFilters" << nameFilters;
it = new QDirIterator(path, nameFilters, QDir::NoFilter, QDirIterator::Subdirectories);
while (it->hasNext()) {
    QString filename = it->next();
    qDebug() << "filename" << filename;
}

but the output is :

nameFilters ("t*.txt") 
filename "C:/temp/test/test2.txt"

Note that this code works well:

QDir dir(path);
qDebug() << dir.entryList(nameFilters, QDir::NoFilter);

Outputs for QDir :

entryList ("Test1.txt", "test2.txt")