bug fix for #148
bug fix for #148

bssrdf/ardb,tempbottle/ardb,cloudrain21/ardb,lsm/ardb,spitfire2/ardb,placrosse/ardb,tempbottle/ardb,wfxiang08/ardb,cloudrain21/ardb,yinqiwen/ardb,placrosse/ardb,lsm/ardb,yinqiwen/ardb,bssrdf/ardb,spitfire2/ardb,wfxiang08/ardb