diff --git a/doc/predef.qbk b/doc/predef.qbk
index b893305..dcd680b 100644
--- a/doc/predef.qbk
+++ b/doc/predef.qbk
@@ -443,6 +443,10 @@ and "Y", "M", "D" for dates.
 [include ../include/boost/predef/os/bsd/*.h]
 [endsect]
 
+[section `BOOST_PLAT` platform macros]
+[include ../include/boost/predef/platform/*.h]
+[endsect]
+
 [section Other macros]
 [include ../include/boost/predef/other/*.h]
 [endsect]
@@ -475,4 +479,4 @@ Edward Diener, Dave Abrahams, Iain Denniston, Dan Price,
 Ioannis Papadopoulos, and Robert Ramey. And thanks to
 Joel Falcou for managing the review of this library.
 
-[endsect]
\ No newline at end of file
+[endsect]