diff --git a/.travis.yml b/.travis.yml
index dc38754..4c0a45a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,9 +12,8 @@ before_install:
   - sudo luarocks install faketorio
 
 script:
-# TODO: correct paths
-  - luacheck ./src/*.lua --globals todo mod_gui script game defines data serpent settings global
-  - luacheck ./src/todo/*.lua --globals todo mod_gui script game defines data serpent settings global
+  - luacheck ./src/*.lua --globals pmon mod_gui script game defines data serpent settings global table
+  - luacheck ./src/pmon/*.lua --globals pmon mod_gui script game defines data serpent settings global table
   - faketorio package -c .travis/.faketorio -v
 
 deploy:
diff --git a/src/pmon/pmon.lua b/src/pmon/pmon.lua
index 940ca48..a005091 100644
--- a/src/pmon/pmon.lua
+++ b/src/pmon/pmon.lua
@@ -106,9 +106,9 @@ function pmon.ensure_monitor_title(flow, monitor)
     })
 end
 
-function pmon.ensure_monitor_delete_button(flow, monitor)
+--[[function pmon.ensure_monitor_delete_button(flow, monitor)
 
-end
+end]]--
 
 function pmon.ensure_progress_bar(frame, monitor)
     local bar_name = "pmon_" .. monitor.name .. "_progress_bar"
@@ -200,7 +200,7 @@ function pmon.create_add_dialog(player, entity)
         direction = "horizontal"
     })
 
-    local ok = button_flow.add({
+    button_flow.add({
         type = "button",
         style = "pmon_button_default",
         name = "pmon_add_monitor_button",
@@ -225,7 +225,7 @@ function pmon.get_add_dialog(player)
 end
 
 function pmon.on_player_selected_area(event)
-    player = game.players[event.player_index]
+    local player = game.players[event.player_index]
 
     if player.cursor_stack.name == "pmon-power-monitor" then
         local entity = event.entities[1]