[xmonad] Cannot manage windows by title

Hi, I would like to manage some windows depending on their *title* (WM_NАМЕ). I wrote a manage hook but it doesn't seem to be working (ie, the action is not performed). Matching by *className* and *resource* seems to work, but not by *title*. myManageHook = composeAll . concat $ [ [ fmap ("Gvim" `isInfixOf`) className --> doFloat ] -- Works , [ fmap ("gvim" `isInfixOf`) resource --> doFloat ] -- Works , [ fmap ("journal.txt" `isInfixOf`) title --> doFloat ] -- Does not work ] I also tried to use (stringProperty "WM_NAME") Any ideas? I'm running xmonad with GNOME on Ubuntu. Thanks in advance :) Alexey