diff --git a/roles/usb_lib/templates/iiab-clean-usb.sh b/roles/usb_lib/templates/iiab-clean-usb.sh
index 56d63292d..dcdf987d3 100644
--- a/roles/usb_lib/templates/iiab-clean-usb.sh
+++ b/roles/usb_lib/templates/iiab-clean-usb.sh
@@ -1,9 +1,9 @@
 #!/bin/bash
 # Remove symlink in /library/content to automounted usb drive
 #
-DEVICE=`echo $@ | sed -s 's|-|/|'`
-MNT_POINT=`findmnt -n /$DEVICE | awk '{print $1}'`
-CONTENT_LINK_USB=`basename $MNT_POINT | awk '{print toupper($0)}'`
+DEVICE=$(echo $@ | sed -s 's|-|/|')
+MNT_POINT=$(findmnt -n /$DEVICE | awk '{print $1}')
+CONTENT_LINK_USB=$(basename $MNT_POINT | awk '{print toupper($0)}')
 CONTENT_LINK="/library/www/html/local_content/$CONTENT_LINK_USB"
 logger -p user.notice -t "usb_lib (iiab-clean-usb.sh)" -- "Attempting to remove link $CONTENT_LINK."