diff --git a/README.md b/README.md
index 3130434..53766c9 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ class User < Struct.new(:username, :password)
   include Zxcvbn
 
   def password_strength
-    zxcvbn(password, [username])
+    zxcvbn(password, [username, 'sitename'])
   end
 end