diff --git a/advanced/Scripts/update.sh b/advanced/Scripts/update.sh
index 41748717..2feecd54 100644
--- a/advanced/Scripts/update.sh
+++ b/advanced/Scripts/update.sh
@@ -14,10 +14,10 @@
 
 # Variables
 
-webInterfaceGitUrl="https://github.com/pi-hole/AdminLTE.git"
-webInterfaceDir="/var/www/html/admin"
-piholeGitUrl="https://github.com/pi-hole/pi-hole.git"
-piholeFilesDir="/etc/.pihole"
+readonly WEBINTERFACEGITURL="https://github.com/pi-hole/AdminLTE.git"
+readonly WEBINTERFACEDIR="/var/www/html/admin"
+readonly PIHOLEGITURL="https://github.com/pi-hole/pi-hole.git"
+readonly PIHOLEFILESDIR="/etc/.pihole"
 
 spinner() {
 	local pid=${1}
@@ -117,7 +117,7 @@ if [[ "${piholeVersion}" == "${piholeVersionLatest}" ]] && [[ "${webVersion}" ==
 
 elif [[ "${piholeVersion} == ${piholeVersionLatest}" ]] && [[ "${webVersion}" != "${webVersionLatest}" ]]; then
 	echo "::: Pi-hole Web Admin files out of date"
-	getGitFiles "${webInterfaceDir}" "${webInterfaceGitUrl}"
+	getGitFiles "${WEBINTERFACEDIR}" "${WEBINTERFACEGITURL}"
 	echo ":::"
 	webVersion=$(pihole -v -a -c)
 	echo "::: Web Admin version is now at ${webVersion}"
@@ -125,7 +125,7 @@ elif [[ "${piholeVersion} == ${piholeVersionLatest}" ]] && [[ "${webVersion}" !=
 	echo ""
 elif [[ "${piholeVersion}" != "${piholeVersionLatest}" ]] && [[ "${webVersion}" == "${webVersionLatest}" ]]; then
 	echo "::: Pi-hole core files out of date"
-	getGitFiles "${piholeFilesDir}" "${piholeGitUrl}"
+	getGitFiles "${PIHOLEFILESDIR}" "${PIHOLEGITURL}"
 	/etc/.pihole/automated\ install/basic-install.sh --reconfigure --unattended
 	echo ":::"
 	piholeVersion=$(pihole -v -p -c)
@@ -134,7 +134,7 @@ elif [[ "${piholeVersion}" != "${piholeVersionLatest}" ]] && [[ "${webVersion}"
 	echo ""
 elif [[ "${piholeVersion}" != "${piholeVersionLatest}" ]] && [[ "${webVersion}" != "${webVersionLatest}" ]]; then
 	echo "::: Updating Everything"
-	getGitFiles "${piholeFilesDir}" "${piholeGitUrl}"
+	getGitFiles "${PIHOLEFILESDIR}" "${PIHOLEGITURL}"
 	/etc/.pihole/automated\ install/basic-install.sh --unattended
 
 	# Checks Pi-hole version > admin only > current local git repo version : returns string in format vX.X.X