--- new/genfstab.in	2015-07-23 12:22:49.296352779 +0200
+++ old/genfstab.in	2015-07-23 12:23:37.630014979 +0200
@@ -119,7 +119,7 @@
 shift $(( OPTIND - 1 ))
 
 (( $# )) || die "No root directory specified"
-root=$1; shift
+root="$(realpath -eL $1)"; shift
 
 if ! mountpoint -q "$root"; then
   die "$root is not a mountpoint"