diff --git a/test/lib/with_different_ofs.rb b/test/lib/with_different_ofs.rb
index 559ed6a..96d4be6 100644
--- a/test/lib/with_different_ofs.rb
+++ b/test/lib/with_different_ofs.rb
@@ -17,6 +17,6 @@ def teardown
 
   def self.extended(klass)
     super(klass)
-    klass.const_set(:DifferentOFS, Class.new(klass).class_eval {include WithDifferentOFS}).name
+    klass.const_set(:DifferentOFS, Class.new(klass).class_eval {include WithDifferentOFS})[0].name
   end
 end