[xmonad] Focus chrome window after changing workspace

Hi all, After i switch workspace in xmonad with e.g. Alt+3 my google-chrome window in workspace 3 has no focus. I'd like xmonad to automatically give focus to the top window in the workspace i'm switching to. I'm using xmonad 0.11 with chrome 45, ubuntu 15.04 Is anyone familiar with this problem? -- Best, jg