diff --git a/activeresource/test/cases/base/schema_test.rb b/activeresource/test/cases/base/schema_test.rb
index d1afb9f439..d9dc679941 100644
--- a/activeresource/test/cases/base/schema_test.rb
+++ b/activeresource/test/cases/base/schema_test.rb
@@ -1,4 +1,5 @@
 require 'abstract_unit'
+require 'active_support/core_ext/hash/conversions'
 require "fixtures/person"
 require "fixtures/street_address"