diff --git a/nucleotide-count/example.lua b/nucleotide-count/example.lua
index d7fbaf1f..030aa9d8 100644
--- a/nucleotide-count/example.lua
+++ b/nucleotide-count/example.lua
@@ -3,7 +3,7 @@ local DNA = {}
 function DNA:new(str)
   self.__index = self
   local nc = { A = 0, T = 0, C = 0, G = 0}
-  local n = { 'A','T','C','G','U'}
+  local n = { 'A','T','C','G'}
   for i =1,str:len() do
     local c = str:sub(i,i)
     nc[c]= nc[c] + 1
@@ -12,15 +12,10 @@ function DNA:new(str)
 end
 
 function DNA:count(symbol)
-  if  ( self.nucleotideCounts[symbol] ) then 
+  if  ( self.nucleotideCounts[symbol] ) then
     return self.nucleotideCounts[symbol]
-  end  
-  for _,v in pairs(self.NUCLEOTIDES) do
-    if v == symbol then
-      return 0
-    end
   end
   return error("Invalid Nucleotide")
 end
 
-return DNA
\ No newline at end of file
+return DNA
diff --git a/nucleotide-count/nucleotide-count_test.lua b/nucleotide-count/nucleotide-count_test.lua
index acd79a3d..f999f549 100644
--- a/nucleotide-count/nucleotide-count_test.lua
+++ b/nucleotide-count/nucleotide-count_test.lua
@@ -1,6 +1,6 @@
 local DNA = require('nucleotide-count')
 
-describe('DNA', function() 
+describe('DNA', function()
 
   it('has no nucleotides', function()
     local expected =  { A = 0, T = 0, C = 0, G = 0 }
@@ -44,13 +44,6 @@ describe('DNA', function()
     assert.are.same(expected,result)
   end)
 
-  it('has no uracil', function()
-    local dna = DNA:new('GGTTGG')
-     expected = 0
-     result = dna:count('U')
-     assert.are.same(expected,result)
-  end)
-
   it('validates nucleotides', function()
     local dna = DNA:new('GGTTGG')
      assert.has.errors(function() dna:count('X') end)