diff --git a/activesupport/test/xml_mini/jdom_engine_test.rb b/activesupport/test/xml_mini/jdom_engine_test.rb
index 904ef7b208..ed4de8aba2 100644
--- a/activesupport/test/xml_mini/jdom_engine_test.rb
+++ b/activesupport/test/xml_mini/jdom_engine_test.rb
@@ -178,7 +178,7 @@ if RUBY_PLATFORM =~ /java/
     private
       def assert_equal_rexml(xml)
         parsed_xml = XmlMini.parse(xml)
-        hash = XmlMini.with_backend('REXML') { parsed_xml }
+        hash = XmlMini.with_backend('REXML') { XmlMini.parse(xml) }
         assert_equal(hash, parsed_xml)
       end
   end
diff --git a/activesupport/test/xml_mini/libxml_engine_test.rb b/activesupport/test/xml_mini/libxml_engine_test.rb
index e7cb350663..ab029e3910 100644
--- a/activesupport/test/xml_mini/libxml_engine_test.rb
+++ b/activesupport/test/xml_mini/libxml_engine_test.rb
@@ -195,7 +195,7 @@ class LibxmlEngineTest < ActiveSupport::TestCase
   private
     def assert_equal_rexml(xml)
       parsed_xml = XmlMini.parse(xml)
-      hash = XmlMini.with_backend('REXML') { parsed_xml }
+      hash = XmlMini.with_backend('REXML') { XmlMini.parse(xml) }
       assert_equal(hash, parsed_xml)
     end
 end
diff --git a/activesupport/test/xml_mini/libxmlsax_engine_test.rb b/activesupport/test/xml_mini/libxmlsax_engine_test.rb
index 07485911c9..010aea95d7 100644
--- a/activesupport/test/xml_mini/libxmlsax_engine_test.rb
+++ b/activesupport/test/xml_mini/libxmlsax_engine_test.rb
@@ -186,7 +186,7 @@ class LibXMLSAXEngineTest < ActiveSupport::TestCase
   private
     def assert_equal_rexml(xml)
       parsed_xml = XmlMini.parse(xml)
-      hash = XmlMini.with_backend('REXML') { parsed_xml }
+      hash = XmlMini.with_backend('REXML') { XmlMini.parse(xml) }
       assert_equal(hash, parsed_xml)
     end
 end
diff --git a/activesupport/test/xml_mini/nokogiri_engine_test.rb b/activesupport/test/xml_mini/nokogiri_engine_test.rb
index 937517786e..f6a7c8376c 100644
--- a/activesupport/test/xml_mini/nokogiri_engine_test.rb
+++ b/activesupport/test/xml_mini/nokogiri_engine_test.rb
@@ -208,7 +208,7 @@ class NokogiriEngineTest < ActiveSupport::TestCase
   private
     def assert_equal_rexml(xml)
       parsed_xml = XmlMini.parse(xml)
-      hash = XmlMini.with_backend('REXML') { parsed_xml }
+      hash = XmlMini.with_backend('REXML') { XmlMini.parse(parsed_xml) }
       assert_equal(hash, parsed_xml)
     end
 end
diff --git a/activesupport/test/xml_mini/nokogirisax_engine_test.rb b/activesupport/test/xml_mini/nokogirisax_engine_test.rb
index 84a5c44a87..0719854e3a 100644
--- a/activesupport/test/xml_mini/nokogirisax_engine_test.rb
+++ b/activesupport/test/xml_mini/nokogirisax_engine_test.rb
@@ -209,7 +209,7 @@ class NokogiriSAXEngineTest < ActiveSupport::TestCase
   private
     def assert_equal_rexml(xml)
       parsed_xml = XmlMini.parse(xml)
-      hash = XmlMini.with_backend('REXML') { parsed_xml }
+      hash = XmlMini.with_backend('REXML') { XmlMini.parse(xml) }
       assert_equal(hash, parsed_xml)
     end
 end
diff --git a/activesupport/test/xml_mini/rexml_engine_test.rb b/activesupport/test/xml_mini/rexml_engine_test.rb
index 70a3b918fd..0f1187db57 100644
--- a/activesupport/test/xml_mini/rexml_engine_test.rb
+++ b/activesupport/test/xml_mini/rexml_engine_test.rb
@@ -30,7 +30,7 @@ class REXMLEngineTest < ActiveSupport::TestCase
   private
     def assert_equal_rexml(xml)
       parsed_xml = XmlMini.parse(xml)
-      hash = XmlMini.with_backend('REXML') { parsed_xml }
+      hash = XmlMini.with_backend('REXML') { XmlMini.parse(xml) }
       assert_equal(hash, parsed_xml)
     end
 end