@SHORT_VERSION@ is not replaced in Info.plist file (for Mac bundles)

The qmake doc about QMAKE_INFO_PLIST (at http://doc.trolltech.com/4.6/qmake-variable-reference.html#qmake-info-plist) says that "In the .plist file, you can define some variables [...] which qmake will replace with the actual executable name." It also says that one of these variables is "@SHORT_VERSION@". However, when I include @SHORT_VERSION@, it never gets replace and ends up litteraly in the Info.plist file.

My .pro file is:

TARGET = Foo
VERSION = 0.0.1

HEADERS = mainwindow.hpp
SOURCES = main.cpp mainwindow.cpp

macx {
ICON = images/icon.icns
QMAKE_INFO_PLIST = MyInfo.plist
}

The resulting Info.plist file contains:

<key>CFBundleGetInfoString</key>
<string>@SHORT_VERSION@</string>