diff --git a/handbook/computing/contribute.html b/handbook/computing/contribute.html
index 1b0d021e7..12acfce90 100644
--- a/handbook/computing/contribute.html
+++ b/handbook/computing/contribute.html
@@ -136,6 +136,8 @@ of the things we are already thinking about. And before you do anything, please
 a page or two on what you think would be a good idea (using the handbook editing 
 <a href="hbmanual1.html">"Edit this page"</a> capability to
 add a new design document).
+  
+
 <h3>Your laptop</h3>
 <p>
 Your own laptop + web-browser is already a <a href="basiclaptop.html">basic expo machine</a>.
@@ -144,7 +146,7 @@ then <a href="surveylaptop.html">a survey laptop</a>. This
 can take an hour or so, but you don't need to install everything before
 you can contribute to fixing things in the <a href="todo.html">Expo <em>Systems</em> To-Do List</a>. 
 Once you have got a bit of experience with the how expo works, you can upgrade your laptop
-to a <a href="bulupdatelaptop.html">bulk update machine</a>.
+to a <a href="bulkupdatelaptop.html">bulk update machine</a>.
 If you really want to get stuck into the code you will need a <a href="../troggle/troglaptop.html">troggle software development configuration</a>.
 
 <p>Finally, if that all sounds like too much hassle for you, were are in desparate need
@@ -170,6 +172,5 @@ Note that "Cambridge University" and other similar phrases are
 <hr />
 Go on to: <a href="../troggle/trogintro.html">Troggle introduction</a><br />
 Return to: <a href="onlinesystems.html">Expo systems overview</a><br />
-<hr />
-</body>
+<hr /></body>
 </html>