Fix #5514 again
Fix #5514 again

hvy/chainer,okuta/chainer,wkentaro/chainer,chainer/chainer,hvy/chainer,niboshi/chainer,niboshi/chainer,niboshi/chainer,chainer/chainer,okuta/chainer,hvy/chainer,chainer/chainer,okuta/chainer,niboshi/chainer,wkentaro/chainer,pfnet/chainer,wkentaro/chainer,chainer/chainer,okuta/chainer,hvy/chainer,wkentaro/chainer