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 <body>
-  <h1 class="center"><img src="images/ant_logo_large.gif" width="190" height="120"></h1>
+  <h1 class="center"><img src="images/ant_logo_large.gif" width="190" height="120" alt="Apache Ant logo"></h1>
   <h1 class="center">Apache Ant&trade; 1.10.4 Manual</h1>
   <p>This is the manual for version 1.10.4 of <a href="https://ant.apache.org/" target="_top">Apache Ant</a>. If your
     version of Ant (as verified with <kbd>ant -version</kbd>) is older or newer than this version then this is not the
