diff --git a/test/test_tags.rb b/test/test_tags.rb
index d3a96e6a..18bba704 100644
--- a/test/test_tags.rb
+++ b/test/test_tags.rb
@@ -275,7 +275,7 @@ class TestTags < JekyllUnitTest
         expected = <<~EOS
           <p>This is not yet highlighted</p>\n
           <figure class="highlight"><pre><code class="language-php" data-lang="php"><table class="rouge-table"><tbody><tr><td class="gutter gl"><pre class="lineno">1
-          </pre></td><td class="code"><pre><span class="nx">test</span>\n</pre></td></tr></tbody></table></code></pre></figure>\n
+          </pre></td><td class="code"><pre><span class="n">test</span>\n</pre></td></tr></tbody></table></code></pre></figure>\n
           <p>This should not be highlighted, right?</p>
         EOS
         assert_match(expected, @result)