diff --git a/devel-docs/app/app-docs.sgml b/devel-docs/app/app-docs.sgml
index 328531d933..f700df802b 100644
--- a/devel-docs/app/app-docs.sgml
+++ b/devel-docs/app/app-docs.sgml
@@ -1003,6 +1003,8 @@
     </chapter>
   </part>
 
-  <index />
+  <index>
+    <title>Index</title>
+  </index>
 
 </book>