diff --git a/app/interactors/pavlov/interactor.rb b/app/interactors/pavlov/interactor.rb
index <HASH>..<HASH> 100644
--- a/app/interactors/pavlov/interactor.rb
+++ b/app/interactors/pavlov/interactor.rb
@@ -1,4 +1,5 @@
 require 'active_support/concern'
+require 'active_support/inflector'
 
 module Pavlov
   module Interactor
diff --git a/app/interactors/pavlov/operation.rb b/app/interactors/pavlov/operation.rb
index <HASH>..<HASH> 100644
--- a/app/interactors/pavlov/operation.rb
+++ b/app/interactors/pavlov/operation.rb
@@ -9,7 +9,7 @@ module Pavlov
     end
 
     def raise_unauthorized
-      raise CanCan::AccessDenied
+      raise CanCan::AccessDenied, 'Unauthorized'
     end
 
     def check_authority
Bugfix, boyscout

Added a require so tests can be run standalone
Raise now with message, so it doesn't use the Class as message