Publish project wizard fails to create package because debian/rules is not executable

When using the "Publish Project..." wizard to publish a Maemo5 project it fails with the following error message:

debian/rules clean
Can't exec "debian/rules": Permission denied at /home/micha/Develop/QtSDK/Maemo/4.6.2/madbin/dpkg-buildpackage line 474.
dpkg-buildpackage: failure: debian/rules clean failed with unknown exit code -1

Apparently QtCreator copies the whole source dir to /tmp/qtc_packaging_projectname/ but for some reason takes away the executable flag from the rules file (/tmp/qtc_packaging_prjectname/projectname/debian/rules) and then fails to execute it.

Setting the x-bit manually between the copy process and the actual execution makes the wizard complete sucessfully.