mkfs.xfs -n ci - error?

[Linda A. Walsh]

I'm trying to use the "-n ci" option on a volume, but get an error where it tells me
the correct syntax is "-n ci".  Am I missing something?

mkfs.xfs -i maxpct=5 -n ci -l size=32704b,lazy-count=1 -d su=64k,sw=4 -L Backup -f /dev/Space/Backup 
unknown option -n ci
Usage: mkfs.xfs
/* blocksize */         [-b log=n|size=num]
/* data subvol */       [-d agcount=n,agsize=n,file,name=xxx,size=num,
                            (sunit=value,swidth=value|su=num,sw=num),
                            sectlog=n|sectsize=num
/* inode size */        [-i log=n|perblock=n|size=num,maxpct=n,attr=0|1|2]
/* log subvol */        [-l agnum=n,internal,size=num,logdev=xxx,version=n
                            sunit=value|su=num,sectlog=n|sectsize=num,
                            lazy-count=0|1]
/* label */             [-L label (maximum 12 characters)]
/* naming */            [-n log=n|size=num,version=2|ci]
                        ^^^^                        ^^^