diff --git a/dynamic_bitset.html b/dynamic_bitset.html
index a707627..079bafa 100644
--- a/dynamic_bitset.html
+++ b/dynamic_bitset.html
@@ -210,6 +210,8 @@ public:
     dynamic_bitset&amp; <a href="#flip3">flip</a>(size_type n, size_type len);
     dynamic_bitset&amp; <a href="#flip2">flip</a>(size_type n);
     dynamic_bitset&amp; <a href="#flip1">flip</a>();
+    bool <a href="#const-at">at</a>(size_type n) const;
+    reference <a href="#at">at</a>(size_type n);
     bool <a href="#test">test</a>(size_type n) const;
     bool <a href="#test">test_set</a>(size_type n, bool val = true);
     bool <a href="#all">all</a>() const;
@@ -1252,7 +1254,7 @@ returns <tt>false</tt>.<br />
 
 <hr />
 <pre>
-bool <a id="at">at</a>(size_type n) const
+bool <a id="const-at">at</a>(size_type n) const
 </pre>
 
 <b>Precondition:</b> <tt>n &lt; this-&gt;size()</tt>.<br />