diff --git a/test/test_rdoc_ri_driver.rb b/test/test_rdoc_ri_driver.rb
index 590c10906d..ddd0904021 100644
--- a/test/test_rdoc_ri_driver.rb
+++ b/test/test_rdoc_ri_driver.rb
@@ -699,6 +699,12 @@ def test_display_method_overridden
     refute_match %r%must not be displayed%, out
   end
 
+  def test_display_name
+    util_store
+
+    assert_equal true, @driver.display_name('home:README.rdoc')
+  end
+
   def test_display_name_not_found_class
     util_store