diff --git a/auto/doc/build.html b/auto/doc/build.html
index ef06a85..c8bee9a 100644
--- a/auto/doc/build.html
+++ b/auto/doc/build.html
@@ -44,4 +44,4 @@
 <li>gcc compiler</li>
 </ul>
 
-Ubuntu: <pre>sudo apt-get install Xmu-dev Xi-Dev</pre>
+Ubuntu: <pre>sudo apt-get install libXmu-dev libXi-dev</pre>