diff --git a/gps/gpsServer.lua b/gps/gpsServer.lua
index c324cf0..15191e5 100644
--- a/gps/gpsServer.lua
+++ b/gps/gpsServer.lua
@@ -4,7 +4,6 @@ local Util   = require('opus.util')
 local UI     = require('opus.ui')
 local Event  = require('opus.event')
 
-local args       = { ... }
 local colors     = _G.colors
 local fs         = _G.fs
 local gps        = _G.gps
@@ -24,7 +23,7 @@ local STARTUP_FILE = 'usr/autorun/gpsServer.lua'
 local positions = { }
 
 UI:configure('gps', ...)
-local args, options = Util.parse( ... )
+local args = Util.parse( ... )
 
 local page = UI.Page {
 	menuBar = UI.MenuBar {
@@ -60,7 +59,9 @@ function page.grid:getDisplayValues(row)
 end
 
 function page.grid:getRowTextColor(row, selected)
-	return row.changed and colors.yellow or not row.alive and colors.lightGray or UI.Grid.getRowTextColor(self, row, selected)
+	return row.changed and colors.yellow or
+				 not row.alive and colors.lightGray or
+				 UI.Grid.getRowTextColor(self, row, selected)
 end
 
 function page.menuBar:eventHandler(event)
@@ -71,7 +72,7 @@ function page.menuBar:eventHandler(event)
 			end
 		end
 	elseif event.type == 'clear_all' then
-		for id, detail in pairs(positions) do
+		for id in pairs(positions) do
 			positions[id] = nil
 		end
 	else return UI.MenuBar.eventHandler(self, event)
@@ -251,7 +252,7 @@ local function server(mode)
 		end
 	end
 
-	Event.on('modem_message', function(e, side, channel, computerId, message, distance)
+	Event.on('modem_message', function(_, side, channel, computerId, message, distance)
 		if distance and modems[side] then
 			if mode == 'gps' and channel == gps.CHANNEL_GPS and message == "PING" then
 				for _, modem in pairs(modems) do
@@ -268,7 +269,7 @@ local function server(mode)
 
 	Event.onInterval(1, function()
 		local resync = false
-		for id, detail in pairs(positions) do
+		for _, detail in pairs(positions) do
 			if os.clock() - detail.lastChanged > 10 then
 				detail.changed = false
 				resync = true
diff --git a/milo/plugins/statsView.lua b/milo/plugins/statsView.lua
index 3f1ba3c..9f9c0a2 100644
--- a/milo/plugins/statsView.lua
+++ b/milo/plugins/statsView.lua
@@ -115,12 +115,14 @@ local function createPage(node)
 				},
 				storage = UI.ProgressBar {
 					x = 2, ex = -2, y = 7, height = 3,
+					progressChar = ' ',
 				},
 				unlockedLabel = UI.Text {
 					x = 2, ex = -1, y = 12,
 				},
 				unlocked = UI.ProgressBar {
 					x = 2, ex = -2, y = 13, height = 3,
+					progressChar = ' ',
 				},
 				craftingLabel = UI.Text {
 					x = 2, ex = -1, y = 18,
@@ -128,6 +130,7 @@ local function createPage(node)
 				},
 				crafting = UI.ProgressBar {
 					x = 2, ex = -2, y = 19, height = 3,
+					progressChar = ' ',
 					value = 100,
 				},
 			},
diff --git a/swshop/Shoplogs.lua b/swshop/Shoplogs.lua
index 0f8c587..476744b 100644
--- a/swshop/Shoplogs.lua
+++ b/swshop/Shoplogs.lua
@@ -3,8 +3,12 @@ local Util   = require('opus.util')
 local Event  = require('opus.event')
 local Config = require('opus.config')
 
+local colors = _G.colors
+local fs     = _G.fs
+
 UI:configure('Shoplogs', ...)
-local args, options = Util.parse( ... )
+local args = Util.parse( ... )
+local logFile = args[1] or '/usr/swshop.log'
 
 local config = Config.load('Shoplogs', {
 	timezone = 0,
@@ -100,7 +104,7 @@ function page.menuBar:eventHandler(event)
 		page.grid.values = {}
 		page.grid:update()
 		page.grid:draw()
-		fs.delete(args[1])
+		fs.delete(logFile)
 
 	elseif event.type == "set_timezone" then
 		page.tzSlide:show()
@@ -146,7 +150,7 @@ function page.grid:addTransaction(transaction)
 end
 
 function page.grid:loadTransactions()
-	local logs = Util.readTable(args[1]) or {}
+	local logs = Util.readTable(logFile) or {}
 	self:setValues(logs)
 	self:update()
 end