diff --git a/doc/01_quick_start.qbk b/doc/01_quick_start.qbk
index 2b642df..fee59c5 100644
--- a/doc/01_quick_start.qbk
+++ b/doc/01_quick_start.qbk
@@ -88,12 +88,12 @@ Suppose we want to implement a ['lazy load] optimization. This is because we do
 
     class Widget
     {
-      boost::optional<Resource> resource_;
+      mutable boost::optional<const Resource> resource_;
       
     public:
       Widget() {}
       
-      Resource& getResource() // not thread-safe
+      const Resource& getResource() const // not thread-safe
       {
         if (resource_ == boost::none)
             resource_.emplace("resource", "arguments");
diff --git a/doc/html/boost_optional/quick_start/optional_data_members.html b/doc/html/boost_optional/quick_start/optional_data_members.html
index 505f0ce..abb5589 100644
--- a/doc/html/boost_optional/quick_start/optional_data_members.html
+++ b/doc/html/boost_optional/quick_start/optional_data_members.html
@@ -35,12 +35,12 @@
       </p>
 <pre class="programlisting"><span class="keyword">class</span> <span class="identifier">Widget</span>
 <span class="special">{</span>
-  <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">Resource</span><span class="special">&gt;</span> <span class="identifier">resource_</span><span class="special">;</span>
+  <span class="keyword">mutable</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special">&lt;</span><span class="keyword">const</span> <span class="identifier">Resource</span><span class="special">&gt;</span> <span class="identifier">resource_</span><span class="special">;</span>
 
 <span class="keyword">public</span><span class="special">:</span>
   <span class="identifier">Widget</span><span class="special">()</span> <span class="special">{}</span>
 
-  <span class="identifier">Resource</span><span class="special">&amp;</span> <span class="identifier">getResource</span><span class="special">()</span> <span class="comment">// not thread-safe</span>
+  <span class="keyword">const</span> <span class="identifier">Resource</span><span class="special">&amp;</span> <span class="identifier">getResource</span><span class="special">()</span> <span class="keyword">const</span> <span class="comment">// not thread-safe</span>
   <span class="special">{</span>
     <span class="keyword">if</span> <span class="special">(</span><span class="identifier">resource_</span> <span class="special">==</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">none</span><span class="special">)</span>
         <span class="identifier">resource_</span><span class="special">.</span><span class="identifier">emplace</span><span class="special">(</span><span class="string">"resource"</span><span class="special">,</span> <span class="string">"arguments"</span><span class="special">);</span>
diff --git a/doc/html/index.html b/doc/html/index.html
index f981d82..297e7be 100644
--- a/doc/html/index.html
+++ b/doc/html/index.html
@@ -129,7 +129,7 @@
 </div>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
-<td align="left"><p><small>Last revised: June 06, 2014 at 21:22:06 GMT</small></p></td>
+<td align="left"><p><small>Last revised: June 06, 2014 at 21:50:26 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>