Qt Creator determines the executable name incorrectly for different platforms

I have a project file like this:

QT += core
QT += gui
TARGET = My-App
TEMPLATE = app
maemo5:* {
    QT += maemo5
    CONFIG += qdbus
    TARGET = my-app
}

In this case, Qt Creator still thinks that the name of the executable is "My-App" and not "my-app".