diff --git a/brute_crc32.lua b/brute_crc32.lua
index edab74f..39f5fbd 100644
--- a/brute_crc32.lua
+++ b/brute_crc32.lua
@@ -21,7 +21,7 @@ local attempts = 0
 
 repeat
   local random_crc32  = crc32.hash(attempts)
-  edit_file('i_know_my_crc32.lua', 13, "local crc32_expected = '" .. random_crc32 .. "'")
+  edit_file('i_know_my_crc32.lua', 13, "local crc32_expected = " .. random_crc32)
   local match = require('i_know_my_crc32')
   attempts = attempts + 1
   print(attempts)
diff --git a/i_know_my_crc32.lua b/i_know_my_crc32.lua
index dabbae0..31df19d 100644
--- a/i_know_my_crc32.lua
+++ b/i_know_my_crc32.lua
@@ -2,15 +2,15 @@ local crc32 = require 'crc32'
 local this_file = 'i_know_my_crc32.lua'
 
 function read_all(file)
-	local f = assert(io.open(file, "rb"))
-	local content = f:read("*all")
-	f:close()
-	return content
+  local f = assert(io.open(file, "rb"))
+  local content = f:read("*all")
+  f:close()
+  return content
 end
 
 local content = read_all(this_file)
 local crc32_result  = crc32.hash(content)
-local crc32_expected = ''
+local crc32_expected = 000000000
 
 print('My expected crc32 checksum is ' .. crc32_expected)
 print('My own crc32 checksum is ' .. crc32_result)
diff --git a/i_know_my_md5.lua b/i_know_my_md5.lua
index 0ef9f0a..10ff1b3 100644
--- a/i_know_my_md5.lua
+++ b/i_know_my_md5.lua
@@ -2,10 +2,10 @@ local md5 = require 'md5'
 local this_file = 'i_know_my_md5.lua'
 
 function read_all(file)
-	local f = assert(io.open(file, "rb"))
-	local content = f:read("*all")
-	f:close()
-	return content
+  local f = assert(io.open(file, "rb"))
+  local content = f:read("*all")
+  f:close()
+  return content
 end
 
 local content = read_all(this_file)