diff --git a/activesupport/test/xml_mini/jdom_engine_test.rb b/activesupport/test/xml_mini/jdom_engine_test.rb
index b745228994..6b1edcbc9b 100644
--- a/activesupport/test/xml_mini/jdom_engine_test.rb
+++ b/activesupport/test/xml_mini/jdom_engine_test.rb
@@ -1,5 +1,6 @@
 require 'abstract_unit'
 require 'active_support/xml_mini'
+require 'active_support/core_ext/hash/conversions'
 
 if RUBY_PLATFORM =~ /java/