diff --git a/test/ripper/test_parser_events.rb b/test/ripper/test_parser_events.rb
index 97bea54853..37d72542a7 100644
--- a/test/ripper/test_parser_events.rb
+++ b/test/ripper/test_parser_events.rb
@@ -482,6 +482,7 @@ class TestRipper::ParserEvents < Test::Unit::TestCase
     }
     assert_equal true, thru_heredoc_dedent
     assert_match(/string_content\(\), heredoc\n/, tree)
+    assert_equal(" heredoc\n", str.children[1])
     assert_equal(1, width)
   end