diff --git a/chapter06/mpc.xml b/chapter06/mpc.xml
index ddd655ac3..511ec7cfe 100644
--- a/chapter06/mpc.xml
+++ b/chapter06/mpc.xml
@@ -14,7 +14,7 @@
     <address>&mpc-url;</address>
   </sect1info>
 
-  <title>MPC-&make-version;</title>
+  <title>MPC-&mpc-version;</title>
 
   <indexterm zone="ch-system-mpc">
     <primary sortas="a-MPC">MPC</primary>