diff --git a/task/lexer.rake b/task/lexer.rake
index 5c5004e..e1b58f8 100644
--- a/task/lexer.rake
+++ b/task/lexer.rake
@@ -2,6 +2,20 @@ rule '.rb' => '.rl' do |task|
   Cliver.assert('ragel', '~> 6.7')
 
   sh "ragel -F1 -R #{task.source} -o #{task.name}"
+
+  puts "Applying patch http://git.io/ow6e1A to #{task.name}"
+
+  # Patches the lexer based on http://git.io/ow6e1A.
+  input  = File.read(task.source)
+  output = File.read(task.name)
+  getkey = input.match(/getkey\s+(.+);/)[1]
+
+  output = output.gsub(getkey, '_wide')
+  output = output.gsub('_trans = if', "_wide = #{getkey}\n  _trans = if")
+
+  File.open(task.name, 'w') do |handle|
+    handle.write(output)
+  end
 end
 
 desc 'Generates the lexer'