diff --git a/docs/reference/libmm-glib/libmm-glib-docs.xml b/docs/reference/libmm-glib/libmm-glib-docs.xml
index a712d04e..38a0b9fe 100644
--- a/docs/reference/libmm-glib/libmm-glib-docs.xml
+++ b/docs/reference/libmm-glib/libmm-glib-docs.xml
@@ -236,7 +236,7 @@
     <xi:include href="xml/tree_index.sgml"/>
   </chapter>
 
-  <index id="api-index-full">
+  <index>
     <title>API Index</title>
     <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
   </index>