diff --git a/multi-node-aio/setup-cobbler.sh b/multi-node-aio/setup-cobbler.sh
index e60d5af6..8a12b9c4 100755
--- a/multi-node-aio/setup-cobbler.sh
+++ b/multi-node-aio/setup-cobbler.sh
@@ -95,7 +95,7 @@ update-rc.d cobblerd defaults
 cobbler signature update
 
 # Get ubuntu server image md5 hash file
-wget -O /tmp/MD5SUM5 /tmp/MD5SUM5 http://releases.ubuntu.com/"${DEFAULT_IMAGE:0:5}"/MD5SUMS
+wget -qO /tmp/MD5SUMS http://releases.ubuntu.com/"${DEFAULT_IMAGE:0:5}"/MD5SUMS
 
 # Get ubuntu server image, if the server image exists, compare the md5, rm and download new image if the hash is not
 # the same.
@@ -103,7 +103,7 @@ mkdir_check "/var/cache/iso"
 pushd /var/cache/iso
   if [ -f "/var/cache/iso/ubuntu-"${DEFAULT_IMAGE}"-server-amd64.iso" ]; then
     md5=`md5sum ubuntu-"${DEFAULT_IMAGE}"-server-amd64.iso | awk '{ print $1 }'`
-    if ! grep ${md5} /tmp/MD5SUMS &>/dev/null ; then
+    if ! grep -q ${md5} /tmp/MD5SUMS ; then
       rm /var/cache/iso/ubuntu-"${DEFAULT_IMAGE}"-server-amd64.iso
       wget http://releases.ubuntu.com/"${DEFAULT_IMAGE:0:5}"/ubuntu-"${DEFAULT_IMAGE}"-server-amd64.iso
     fi