diff --git a/backup.sh b/backup.sh
index 9c05593..0cb78ce 100755
--- a/backup.sh
+++ b/backup.sh
@@ -1,7 +1,5 @@
 #!/usr/bin/env sh
 
-BAKRNG_ROOT=`cat rootzfs.txt`
-
 ## Data Format
 
 ### user.txt
@@ -15,7 +13,7 @@ BAKRNG_ROOT=`cat rootzfs.txt`
 ### rootzfs.txt
 # <root zfs>
 
-### datasets.txt
+### datasets.txt (Only required for aggregator setup.)
 # <dataset 1>
 # <dataset 1>/<dataset 1a>
 # <dataset 1>/<dataset 1b>
@@ -24,11 +22,12 @@ BAKRNG_ROOT=`cat rootzfs.txt`
 # <dataset 3>
 # ...
 
-
 if [ ! -f user.txt ]; then echo "No user specified."; exit 2; fi
 if [ ! -f hosts.txt ]; then echo "No hosts specified."; exit 2; fi
 if [ ! -f rootzfs.txt ]; then echo "No rootzfs specified."; exit 2; fi
 
+BAKRNG_ROOT=`cat rootzfs.txt`
+
 list_filesets()
 {
     zfs list | tail -n +2 | cut -d' ' -f1|grep ${BAKRNG_ROOT}