diff --git a/nodes/newdash.lua b/nodes/newdash.lua
index 37c7a1e..e231342 100644
--- a/nodes/newdash.lua
+++ b/nodes/newdash.lua
@@ -13,7 +13,6 @@ local headerFont = love.graphics.newFont('fonts/Lato-Regular.ttf', 40)
 local valueFont = love.graphics.newFont('fonts/Lato-Light.ttf', 45)
 local atFont = love.graphics.newFont('fonts/Lato-Light.ttf', 35)
 
-
 local weatherGlyphs = {
   snow = "",
   mist = "",
@@ -39,7 +38,7 @@ function node:render()
     end
 
     love.graphics.setFont(tempFont)
-    love.graphics.printf(tostring(self.state.temperature) .. "°", 350, 390, 270, 'center')
+    love.graphics.printf(string.format("%d°", self.state.temperature), 350, 390, 270, 'center')
 
     love.graphics.setFont(headerFont)
     love.graphics.printf("Ambient:", 720, 380, 160, 'right')
@@ -48,30 +47,25 @@ function node:render()
 
     love.graphics.setFont(valueFont)
     if self.state.insideTemperature then
-      love.graphics.printf(tostring(self.state.insideTemperature) .. "° / " .. tostring(self.state.insideHumidity) .. "%RH", 900, 378, 400, 'left')
+      love.graphics.printf(string.format("%d° / %d%%RH", self.state.insideTemperature, self.state.insideHumidity), 900, 378, 400, 'left')
     else
       love.graphics.printf("?!", 900, 378, 400, 'left')
     end
     love.graphics.printf("ON or OFF?", 900, 438, 400, 'left')
     love.graphics.printf("ON or OFF?", 900, 498, 400, 'left')
-    --love.graphics.setFont(atFont)
-    --love.graphics.printf(os.date("Last update: %Y/%m/%d %H:%M", self.state.lastUpdate), 0, love.graphics.getHeight() - 60, love.graphics.getWidth(), 'center')
-    --if self.state.insideTemperature then
-    --  love.graphics.printf("Room: " .. tostring(self.state.insideTemperature) .. "° / " .. tostring(self.state.insideHumidity) .. "%RH", 0, love.graphics.getHeight() - 100, love.graphics.getWidth(), 'center')
-    --end
     love.graphics.setFont(headerFont)
     love.graphics.printf("at hackerspace:", 50, 593, 300, 'left')
     love.graphics.setFont(atFont)
     if self.state.at then
       users = lume.map(self.state.at.users, function(v) return v.login end)
       if self.state.at.unknown > 0 then
-        users[#users + 1] = tostring(self.state.at.unknown) .. " unknown creatures"
+        users[#users + 1] = string.format("%d unknown creatures", self.state.at.unknown)
       end
       if self.state.at.kektops > 0 then
-        users[#users + 1] = tostring(self.state.at.kektops) .. " kektops"
+        users[#users + 1] = string.format("%d kektops", self.state.at.kektops)
       end
       if self.state.at.esps > 0 then
-        users[#users + 1] = tostring(self.state.at.esps) .. " ESPs"
+        users[#users + 1] = string.format("%d ESPs", self.state.at.esps)
       end
     end
 
diff --git a/nodes/slideshow.lua b/nodes/slideshow.lua
index 7c051be..7abf0fe 100644
--- a/nodes/slideshow.lua
+++ b/nodes/slideshow.lua
@@ -8,12 +8,14 @@ function node:init(config)
 end
 
 function node:loadImage()
-  local files = self:processFiles(self.files)
-  if files ~= nil then
-    if self.fileName then
-      self.fileName = files[(lume.find(files, self.fileName) or 1) % #files + 1]
-    else
-      self.fileName = files[1]
+  if self.files then
+    local files = self:processFiles(self.files)
+    if files ~= nil then
+      if self.fileName then
+        self.fileName = files[(lume.find(files, self.fileName) or 1) % #files + 1]
+      else
+        self.fileName = files[1]
+      end
     end
   end