diff --git a/neath.html b/neath.html
index 0cff8f3..4521c12 100644
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+++ b/neath.html
@@ -56,7 +56,7 @@
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                     <h3><a href="https://github.com/qurator-spk/neath" target="_blank" tabindex="-1">neath</a>: named entity annotation tool in html</h3>
-                    <a href="https://github.com/qurator-spk/neath/blob/master/docs/User_Guide.md" target="_blank"  tabindex="-1">User Guide</a> | <a href="https://github.com/qurator-spk/neath/blob/master/docs/Annotation_Guidelines.md" target="_blank"  tabindex="-1">Annotation Guidelines</a> | <a href="https://github.com/qurator-spk/neath/issues" target="_blank"  tabindex="-1">Issues</a><hr>
+                    <a href="https://github.com/qurator-spk/neath/blob/master/docs/User_Guide.md" target="_blank"  tabindex="-1">User Guide</a> | <a href="https://github.com/qurator-spk/neath/blob/master/docs/Annotation_Guidelines.pdf" target="_blank"  tabindex="-1">Annotation Guidelines</a> | <a href="https://github.com/qurator-spk/neath/issues" target="_blank"  tabindex="-1">Issues</a><hr>
                 </div>
             </div>
         </div>