diff --git a/Manuals/Tcar-ug/Manuals/Docbook.docbook b/Manuals/Tcar-ug/Manuals/Docbook.docbook
index 24c369a..671428c 100644
--- a/Manuals/Tcar-ug/Manuals/Docbook.docbook
+++ b/Manuals/Tcar-ug/Manuals/Docbook.docbook
@@ -1,4 +1,4 @@
-<chapter id="doc-docbook">
+<chapter id="manuals-docbook">
 
     <title>DocBook Backend</title>