MAC addresso of AP correct but.. considered wrong during a deauth

[thewriter]

Hi all, I'm trying to perform a deauth on my AP but when i type in the MAC address of the ap the pc considers it as wrong.
I type:

aireplay-ng -0 100 -a xx:yy:zz:kk:nn:ww -channel 9 wlan0

xx:yy:zz:kk:nn:ww is the mac address i see when typing iwconfig and from the Wicd network manager window, under the "properties" tab of my Network.
What could be the problem? I've already tried using google, there is nothing regarding my situation.. the mac is exactly the same, do I mistake in typing the command?

[shadowzero]

You don't deauth the AP, you deauth the client(s) associated with the AP. See: http://www.aircrack-ng.org/doku.php?id=deauthentication

[gunrunr]

yeah the only time you use an AP's mac address to attack it is when using a disassociation attack with mdk3, this will kick everyone off of a ap as well.

[thewriter]

Thank you very much, everything is clear now!!