diff --git a/doc/index.sgml b/doc/index.sgml
index f9eed769d..c77344865 100644
--- a/doc/index.sgml
+++ b/doc/index.sgml
@@ -107,6 +107,9 @@
   <tag><htmlurl url="atari.html" name="atari.html"></tag>
   Topics specific to the Atari 8-bit machines.
 
+  <tag><htmlurl url="atari5200.html" name="atari5200.html"></tag>
+  Topics specific to the Atari 5200 Game Console.
+
   <tag><htmlurl url="atmos.html" name="atmos.html"></tag>
   Topics specific to the Oric Atmos.