diff --git a/master.html b/master.html
index 215a0fac..664eb892 100644
--- a/master.html
+++ b/master.html
@@ -912,6 +912,8 @@ disable the limit.</p>
 <h5>max_content_length <a class="headerlink" href="#max_content_length">&para;</a></h5>
 <p>The maximum size of the request body. (bytes)</p>
 <p>Default: <code>100000000</code></p>
+<p>In case of using a reverse proxy in front of check also there related
+option</p>
 </section>
 <section class="level5" id="timeout">
 <h5>timeout <a class="headerlink" href="#timeout">&para;</a></h5>