diff --git a/src/mad/sh/scripts_common.sh b/src/mad/sh/scripts_common.sh
index 0bb132d0a2..94a0c78623 100644
--- a/src/mad/sh/scripts_common.sh
+++ b/src/mad/sh/scripts_common.sh
@@ -251,9 +251,9 @@ function mkfs_command {
             ;;
         "vmdk_*")
             VMWARE_DISK_TYPE=`echo $FSTYPE|cut -d'_' -f 1`
-            echo "WHICH_SUDO=`which sudo` ; \
-                  [ ! -z \"$WHICH_SUDO\" -a -f \"$WHICH_SUDO\" ] && SUDO=\"sudo\" ; \
-                  $SUDO $VMKFSTOOLS -U $DST/disk.vmdk; \ 
+            echo "WHICH_SUDO=\$(which sudo) ; \
+                  [ ! -z \"\$WHICH_SUDO\" -a -f \"\$WHICH_SUDO\" ] && SUDO=\"sudo\" ; \
+                  $SUDO $VMKFSTOOLS -U $DST/disk.vmdk; \
                   $SUDO $VMKFSTOOLS -c ${SIZE}M -d ${VMWARE_DISK_TYPE} $DST_PATH/disk.vmdk"
             return 0
             ;;
diff --git a/src/tm_mad/vmware/clone b/src/tm_mad/vmware/clone
index db12c390f7..5d854f11b2 100755
--- a/src/tm_mad/vmware/clone
+++ b/src/tm_mad/vmware/clone
@@ -58,9 +58,9 @@ log "Cloning $SRC_PATH in $DST"
 CLONESCRIPT=$(cat <<EOF
 cd $DST_DIR
 
-WHICH_SUDO=`which sudo`
+WHICH_SUDO=\$(which sudo)
 
-if [ ! -z "$WHICH_SUDO" -a -f "$WHICH_SUDO" ]; then
+if [ ! -z "\$WHICH_SUDO" -a -f "\$WHICH_SUDO" ]; then
   SUDO="sudo "
 fi