diff --git a/lib/factory_girl/strategy.rb b/lib/factory_girl/strategy.rb
index 2fbec82..2c05268 100644
--- a/lib/factory_girl/strategy.rb
+++ b/lib/factory_girl/strategy.rb
@@ -1,4 +1,3 @@
-require "active_support/core_ext/hash/except"
 require "factory_girl/strategy/build"
 require "factory_girl/strategy/create"
 require "factory_girl/strategy/attributes_for"