cpp.systemIncludePaths Passes Bad Arguments to windres.exe

My project uses a .rc file to set the application icon in Windows. My project also has some sub projects that utilize cpp.systemIncludePaths property (so we can ignore a litany of errors from 3rd party includes). When QBS goes to run windres.exe on my Application.rc file, it fails because it has been passed "-isystem" arguments which it does not understand.