diff --git a/reference/dotnet/book.xml b/reference/dotnet/book.xml
index c2ab7c4a0f..5cc158fbaf 100644
--- a/reference/dotnet/book.xml
+++ b/reference/dotnet/book.xml
@@ -7,13 +7,11 @@
  <title>.NET</title>
  
  <!-- {{{ preface -->
- <!-- FIXME: Empty intro? -->
- <preface xml:id="dotnet.intro">
+ <preface xml:id="intro.dotnet">
   &reftitle.intro;
   
   &warn.experimental;
  </preface>
- <!-- }}} -->
  
  &reference.dotnet.setup;
  &reference.dotnet.constants;