diff --git a/README.md b/README.md
index 8e4bae3..d879aa8 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ class PeopleController < ActionController::Base
   end
 
   # This will pass with flying colors as long as there's a person key in the parameters, otherwise
-  # it'll raise a ActionController::MissingParameter exception, which will get caught by
+  # it'll raise a ActionController::ParameterMissing exception, which will get caught by
   # ActionController::Base and turned into that 400 Bad Request reply.
   def update
     person = current_account.people.find(params[:id])