diff --git a/package/gluon-config-mode-core/luasrc/lib/gluon/web/model/gluon-config-mode/wizard.lua b/package/gluon-config-mode-core/luasrc/lib/gluon/web/model/gluon-config-mode/wizard.lua
index d328f438..22d661c1 100644
--- a/package/gluon-config-mode-core/luasrc/lib/gluon/web/model/gluon-config-mode/wizard.lua
+++ b/package/gluon-config-mode-core/luasrc/lib/gluon/web/model/gluon-config-mode/wizard.lua
@@ -1,5 +1,5 @@
 local fs = require "nixio.fs"
-local util = require "gluon.web.util"
+local util = require "gluon.util"
 local nixio_util = require "nixio.util"
 
 local uci = require("simple-uci").cursor()
diff --git a/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua b/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua
index 8a72bffe..140cb821 100644
--- a/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua
+++ b/package/gluon-config-mode-mesh-vpn/luasrc/lib/gluon/config-mode/reboot/0100-mesh-vpn.lua
@@ -1,7 +1,6 @@
 local site_i18n = i18n 'gluon-site'
 
 local uci = require("simple-uci").cursor()
-local lutil = require "gluon.web.util"
 local fs = require "nixio.fs"
 
 local site = require 'gluon.site'
@@ -30,7 +29,7 @@ if has_tunneldigger then
 elseif has_fastd then
 	local fastd_enabled = uci:get_bool("fastd", "mesh_vpn", "enabled")
 	if fastd_enabled then
-		pubkey = util.trim(lutil.exec("/etc/init.d/fastd show_key mesh_vpn"))
+		pubkey = util.trim(util.exec("/etc/init.d/fastd show_key mesh_vpn"))
 		msg = site_i18n._translate('gluon-config-mode:pubkey')
 	else
 		msg = site_i18n._translate('gluon-config-mode:novpn')
diff --git a/package/gluon-core/luasrc/usr/lib/lua/gluon/util.lua b/package/gluon-core/luasrc/usr/lib/lua/gluon/util.lua
index 1b9bdf3f..d6891c5f 100644
--- a/package/gluon-core/luasrc/usr/lib/lua/gluon/util.lua
+++ b/package/gluon-core/luasrc/usr/lib/lua/gluon/util.lua
@@ -83,6 +83,14 @@ function readline(fd)
 	return line
 end
 
+function exec(command)
+	local pp   = io.popen(command)
+	local data = pp:read("*a")
+	pp:close()
+
+	return data
+end
+
 function node_id()
 	return string.gsub(sysconfig.primary_mac, ':', '')
 end
diff --git a/package/gluon-web-admin/files/lib/gluon/web/view/admin/info.html b/package/gluon-web-admin/files/lib/gluon/web/view/admin/info.html
index 889b0ca3..7e060f57 100644
--- a/package/gluon-web-admin/files/lib/gluon/web/view/admin/info.html
+++ b/package/gluon-web-admin/files/lib/gluon/web/view/admin/info.html
@@ -1,7 +1,6 @@
 <%-
 	local fs = require 'nixio.fs'
 	local uci = require('simple-uci').cursor()
-	local lutil = require 'gluon.web.util'
 	local pretty_hostname = require 'pretty_hostname'
 
 	local site = require 'gluon.site'
@@ -15,7 +14,7 @@
 	local pubkey
 	local meshvpn_enabled = uci:get_bool("fastd", "mesh_vpn", "enabled")
 	if meshvpn_enabled then
-		pubkey = util.trim(lutil.exec('/etc/init.d/fastd show_key mesh_vpn'))
+		pubkey = util.trim(util.exec('/etc/init.d/fastd show_key mesh_vpn'))
 		if pubkey == '' then
 			pubkey = nil
 		end
diff --git a/package/gluon-web-admin/luasrc/lib/gluon/web/controller/admin/upgrade.lua b/package/gluon-web-admin/luasrc/lib/gluon/web/controller/admin/upgrade.lua
index dc6dbea2..6d8e1545 100644
--- a/package/gluon-web-admin/luasrc/lib/gluon/web/controller/admin/upgrade.lua
+++ b/package/gluon-web-admin/luasrc/lib/gluon/web/controller/admin/upgrade.lua
@@ -12,6 +12,7 @@ You may obtain a copy of the License at
 package 'gluon-web-admin'
 
 
+local util = require 'gluon.util'
 local fs = require 'nixio.fs'
 
 local tmpfile = "/tmp/firmware.img"
@@ -61,8 +62,7 @@ local function action_upgrade(http, renderer)
 	end
 
 	local function image_supported(tmpfile)
-		-- XXX: yay...
-		return (os.execute(string.format("/sbin/sysupgrade -T %q >/dev/null", tmpfile)) == 0)
+		return (os.execute(string.format("exec /sbin/sysupgrade -T %q >/dev/null", tmpfile)) == 0)
 	end
 
 	local function storage_size()
@@ -88,7 +88,7 @@ local function action_upgrade(http, renderer)
 	end
 
 	local function image_checksum(tmpfile)
-		return (gluon.web.util.exec(string.format("md5sum %q", tmpfile)):match("^([^%s]+)"))
+		return (util.exec(string.format("exec md5sum %q", tmpfile)):match("^([^%s]+)"))
 	end
 
 
diff --git a/package/gluon-web-mesh-vpn-fastd/luasrc/lib/gluon/web/model/admin/mesh_vpn_fastd.lua b/package/gluon-web-mesh-vpn-fastd/luasrc/lib/gluon/web/model/admin/mesh_vpn_fastd.lua
index 507f8590..c4fb21de 100644
--- a/package/gluon-web-mesh-vpn-fastd/luasrc/lib/gluon/web/model/admin/mesh_vpn_fastd.lua
+++ b/package/gluon-web-mesh-vpn-fastd/luasrc/lib/gluon/web/model/admin/mesh_vpn_fastd.lua
@@ -1,5 +1,5 @@
 local uci = require("simple-uci").cursor()
-local util = gluon.web.util
+local util = gluon.util
 
 local f = Form(translate('Mesh VPN'))
 
diff --git a/package/gluon-web/luasrc/usr/lib/lua/gluon/web/util.lua b/package/gluon-web/luasrc/usr/lib/lua/gluon/web/util.lua
index 3e32ec50..045a16fb 100644
--- a/package/gluon-web/luasrc/usr/lib/lua/gluon/web/util.lua
+++ b/package/gluon-web/luasrc/usr/lib/lua/gluon/web/util.lua
@@ -2,14 +2,10 @@
 -- Copyright 2017 Matthias Schiffer <mschiffer@universe-factory.net>
 -- Licensed to the public under the Apache License 2.0.
 
-local io = require "io"
-local table = require "table"
 local tparser = require "gluon.web.template.parser"
-local nixio = require "nixio"
-local fs = require "nixio.fs"
 
 local getmetatable, setmetatable = getmetatable, setmetatable
-local tostring, pairs = tostring, pairs
+local tostring = tostring
 
 module "gluon.web.util"
 
@@ -63,26 +59,3 @@ end
 function pcdata(value)
 	return value and tparser.pcdata(tostring(value))
 end
-
-
-function contains(table, value)
-	for k, v in pairs(table) do
-		if value == v then
-			return k
-		end
-	end
-	return false
-end
-
-
---
--- System utility functions
---
-
-function exec(command)
-	local pp   = io.popen(command)
-	local data = pp:read("*a")
-	pp:close()
-
-	return data
-end