test(1) unexpected result (to me)

[Julian Elischer]

# ls -l /sys
lrwxrwxrwx  1 root  wheel  11 Sep  4 22:03 /sys -> usr/src/sys
# if [ /sys -ef /usr/src/sys ]
 > then
 > echo same
 > else
 > echo no
 > fi
no


I would have expected the result "same"

comments?