wireless client association hostname

[nisshoodyssey]

Hi all, 

I'm having issue with the above unit. Currently I have 3 units of AIR-SAP2602E-S-K9 with 15.2(2)JB under 1 SSID. Currently all my clients connected to the AP does not have their computer hostname appearing under the client association. What it is showing instead is the hostname of the AP. For eg;

Device Type	Name	IP Address	MAC Address	State	Parent	VLAN
ccx-client	AP-HOSTNAME	XXX.XXX.XXX.XXX	Xxx.xXx.Xxx	EAP-Associated	self	1

Any Idea how I can get the hostname of the clients instead?