diff --git a/awesome-workspace-grid.lua b/awesome-workspace-grid.lua
index dfce582..057eb6b 100644
--- a/awesome-workspace-grid.lua
+++ b/awesome-workspace-grid.lua
@@ -2,35 +2,35 @@ local awful = require("awful")
 local naughty = require("naughty")
 
 function on_tag_selected(t)
-  if t.screen == nil then
-    return
-  end
-  -- Only need to do anything on the focused screen.
-  if t.screen.index ~= awful.screen.focused().index then
-    return
-  end
-  if t.selected == false then
-    -- This is the tag we are leaving
-    return
-  end
-  for i = 1, screen.count() do
-     s = screen[i]
-     notification = naughty.notify({
-           position = "top_middle",
-           preset = naughty.config.presets.normal,
-           replaces_id = s.workspace_notification_id,
-           screen = i,
-           text = t.name,
-           timeout = 1,
-     })
-     s.workspace_notification_id = notification.id
-  end
+   if t.screen == nil then
+      return
+   end
+   -- Only need to do anything on the focused screen.
+   if t.screen.index ~= awful.screen.focused().index then
+      return
+   end
+   if t.selected == false then
+      -- This is the tag we are leaving
+      return
+   end
+   for i = 1, screen.count() do
+      s = screen[i]
+      notification = naughty.notify({
+            position = "top_middle",
+            preset = naughty.config.presets.normal,
+            replaces_id = s.workspace_notification_id,
+            screen = i,
+            text = t.name,
+            timeout = 1,
+      })
+      s.workspace_notification_id = notification.id
+   end
 end
 
 local workspace_grid = {}
 
 function workspace_grid:new(args)
-  return setmetatable({}, {__index = self}):init(args)
+   return setmetatable({}, {__index = self}):init(args)
 end
 
 function workspace_grid:init(args)
@@ -48,38 +48,36 @@ function workspace_grid:init(args)
 end
 
 function workspace_grid:navigate(direction)
-  local t = awful.screen.focused().selected_tag
-  local i = t.index - 1
-  local c = self.columns
-  local r = self.rows
+   local t = awful.screen.focused().selected_tag
+   local i = t.index - 1
+   local c = self.columns
+   local r = self.rows
 
-  -- Don't cycle.
-  -- TODO: Add option for cycling.
-  -- Top row
-  if (i < c)            and (direction == "up")    then return true end
-  -- Left column
-  if (i % c == 0)       and (direction == "left")  then return true end
-  -- Right column
-  if ((i + 1) % c == 0) and (direction == "right") then return true end
-  -- Bottom row
-  if (i >= (r - 1) * c) and (direction == "down")  then return true end
+   -- Don't cycle.
+   -- TODO: Add option for cycling.
+   -- Top row
+   if (i < c)            and (direction == "up")    then return true end
+   -- Left column
+   if (i % c == 0)       and (direction == "left")  then return true end
+   -- Right column
+   if ((i + 1) % c == 0) and (direction == "right") then return true end
+   -- Bottom row
+   if (i >= (r - 1) * c) and (direction == "down")  then return true end
 
-  action = {
-    ["down"] = (i + c) % (r * c) + 1,
-    ["up"] = (i - c) % (r * c) + 1,
-    ["left"] = (math.ceil((i + 1) / c) - 1) * c + ((i - 1) % c) + 1,
-    ["right"] = (math.ceil((i + 1) / c) - 1) * c + ((i + 1) % c) + 1,
-  }
-  local j = action[direction]
+   action = {
+      ["down"] = (i + c) % (r * c) + 1,
+      ["up"] = (i - c) % (r * c) + 1,
+      ["left"] = (math.ceil((i + 1) / c) - 1) * c + ((i - 1) % c) + 1,
+      ["right"] = (math.ceil((i + 1) / c) - 1) * c + ((i + 1) % c) + 1,
+   }
+   local j = action[direction]
 
-  -- Switch tags on all screens at the same time.
-  -- TODO: Add option to switch per-screen.
-  for s in screen do
-    t = s.tags[j]
-    if t then t:view_only() end
-  end
+   -- Switch tags on all screens at the same time.
+   -- TODO: Add option to switch per-screen.
+   for s in screen do
+      t = s.tags[j]
+      if t then t:view_only() end
+   end
 end
 
-return setmetatable(workspace_grid, {
-  __call = workspace_grid.new,
-})
+return setmetatable(workspace_grid, { __call = workspace_grid.new,})