diff --git a/doc/type_traits.qbk b/doc/type_traits.qbk
index 8d188d7..cc76f1d 100644
--- a/doc/type_traits.qbk
+++ b/doc/type_traits.qbk
@@ -15,7 +15,7 @@
     [authors [authors, various]]
     [category template]
     [category generic]
-    [last-revision $LastChangedDate$]
+    [last-revision $Date$]
 ]
 
 
@@ -237,3 +237,4 @@ See __has_trivial_constructor.
 
 
 
+