diff --git a/mat2doc/html/include/docnav.html b/mat2doc/html/include/docnav.html
index cbd4cb05..d1303cf8 100644
--- a/mat2doc/html/include/docnav.html
+++ b/mat2doc/html/include/docnav.html
@@ -9,7 +9,6 @@
 <li><a href="/doc/gabor"><i class="icon-chevron-right"></i>gabor</a></li>
 <li><a href="/doc/nonstatgab"><i class="icon-chevron-right"></i>nonstatgab</a></li>
 <li><a href="/doc/operators"><i class="icon-chevron-right"></i>operators</a></li>
-<li><a href="/doc/periodic"><i class="icon-chevron-right"></i>periodic</a></li>
 
 <li><a href="/doc/quadratic"><i class="icon-chevron-right"></i>quadratic</a></li>
 <li><a href="/doc/sigproc"><i class="icon-chevron-right"></i>signal processing</a></li>