diff --git a/lib/impressionist/engine.rb b/lib/impressionist/engine.rb
index 0764e2b..cd754e9 100644
--- a/lib/impressionist/engine.rb
+++ b/lib/impressionist/engine.rb
@@ -4,7 +4,7 @@ require "rails"
 module Impressionist
   class Engine < Rails::Engine
     initializer 'impressionist.model' do |app|
-      require "../app/models/impressionist/impressionable.rb"
+      require "#{root}/app/models/impressionist/impressionable.rb"
       if Impressionist.orm == :active_record
         require "impressionist/models/active_record/impression.rb"
         require "impressionist/models/active_record/impressionist/impressionable.rb"