diff --git a/ext/digest/lib/digest.rb b/ext/digest/lib/digest.rb
index 5f7ebc2..2703e29 100644
--- a/ext/digest/lib/digest.rb
+++ b/ext/digest/lib/digest.rb
@@ -1,25 +1,11 @@
 require 'digest.so'
+require 'digest/md5'
+require 'digest/sha1'
+require 'digest/sha2'
+require 'digest/bubblebabble'
+require 'digest/rmd160'
 
 module Digest
-  def self.const_missing(name) # :nodoc:
-    case name
-    when :SHA256, :SHA384, :SHA512
-      lib = 'digest/sha2.so'
-    else
-      lib = File.join('digest', name.to_s.downcase)
-    end
-
-    begin
-      require lib
-    rescue LoadError
-      raise LoadError, "library not found for class Digest::#{name} -- #{lib}", caller(1)
-    end
-    unless Digest.const_defined?(name)
-      raise NameError, "uninitialized constant Digest::#{name}", caller(1)
-    end
-    Digest.const_get(name)
-  end
-
   class ::Digest::Class
     # Creates a digest object and reads a given file, _name_.
     # Optional arguments are passed to the constructor of the digest