1 files changed, 13 insertions, 4 deletions
diff --git a/ext/digest/lib/md5.rb b/ext/digest/lib/md5.rb
index 1d05d7d04e..c399f2de1d 100644
--- a/ext/digest/lib/md5.rb
+++ b/ext/digest/lib/md5.rb
@@ -5,10 +5,19 @@
 
 require 'digest/md5'
 
-MD5 = Digest::MD5
+class MD5 < Digest::MD5
+  class << self
+    alias orig_new new
+    def new(str = nil)
+      if str
+        orig_new.update(str)
+      else
+        orig_new
+      end
+    end
 
-class MD5
-  def self.md5(*args)
-    new(*args)
+    def md5(*args)
+      new(*args)
+    end
   end
 end