diff --git a/displayword.lua b/displayword.lua
index 91e59a9..3142b2c 100644
--- a/displayword.lua
+++ b/displayword.lua
@@ -57,7 +57,7 @@ function generateLEDs(words, colorForground, colorMin1, colorMin2, colorMin3, co
  end
  if (adc ~= nil) then
     local per = (100*adc.read(0)/1024)
-    briPercent = ( ((briPercent * 4) +  per) / 5)
+    briPercent = math.floor( ((briPercent * 4) +  per) / 5)
     print("Minutes : " .. tostring(minutes) .. " bright: " .. tostring(briPercent) .. "% current: " .. tostring(per) .. "%")
     data.colorFg   = string.char(string.byte(colorForground,1) * briPercent / 100, string.byte(colorForground,2) * briPercent / 100, string.byte(colorForground,3) * briPercent / 100) 
     data.colorMin1 = string.char(string.byte(colorMin1,1) * briPercent / 100, string.byte(colorMin1,2) * briPercent / 100, string.byte(colorMin1,3) * briPercent / 100)