diff --git a/test/ruby/test_require.rb b/test/ruby/test_require.rb
index 5aadf779fb..13e7076391 100644
--- a/test/ruby/test_require.rb
+++ b/test/ruby/test_require.rb
@@ -532,7 +532,7 @@ class TestRequire < Test::Unit::TestCase
 
   def test_frozen_loaded_features
     bug3756 = '[ruby-core:31913]'
-    assert_in_out_err(['-e', '$LOADED_FEATURES.freeze; require "ostruct"'], "",
+    assert_in_out_err(['-e', '$LOADED_FEATURES.freeze; require "erb"'], "",
                       [], /\$LOADED_FEATURES is frozen; cannot append feature \(RuntimeError\)$/,
                       bug3756)
   end