FactoryGirl Error

gistfile1.txt

-- initialize_schema_migrations_table()
   -> 0.0050s
rake aborted!
FactoryGirl::DuplicateDefinitionError: Factory already registered: item
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/decorator.rb:10:in `method_missing'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/decorator/disallows_duplicates_registry.rb:6:in `register'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl.rb:85:in `block in register_factory'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl.rb:84:in `each'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl.rb:84:in `register_factory'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/syntax/default.rb:20:in `factory'
/Users/zanderm/apps/thingr-rails/spec/factories/items.rb:4:in `block in <top (required)>'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/syntax/default.rb:49:in `instance_eval'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/syntax/default.rb:49:in `run'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/syntax/default.rb:7:in `define'
/Users/zanderm/apps/thingr-rails/spec/factories/items.rb:3:in `<top (required)>'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `load'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `block in load'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:232:in `load_dependency'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:241:in `load'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/find_definitions.rb:20:in `block (2 levels) in find_definitions'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/find_definitions.rb:19:in `each'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/find_definitions.rb:19:in `block in find_definitions'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/find_definitions.rb:15:in `each'
/Users/zanderm/.rvm/gems/ruby-2.1.2/gems/factory_girl-4.4.0/lib/factory_girl/find_definitions.rb:15:in `find_definitions'
/Users/zanderm/apps/thingr-rails/lib/tasks/development_seeds.rake:7:in `block (2 levels) in <top (required)>'
/Users/zanderm/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `eval'
/Users/zanderm/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => dev:prime
(See full trace by running task with --trace)