diff --git a/doc/Jamfile b/doc/Jamfile
index 48a10c14..d97b9559 100644
--- a/doc/Jamfile
+++ b/doc/Jamfile
@@ -9,7 +9,9 @@ path-constant images : html/images ;
 
 
 project python/doc
-    : requirements <format>html:<xsl:param>boost.defaults=none
+    : requirements
+      -<xsl:param>boost.defaults=Boost
+      <format>html:<xsl:param>boost.defaults=none
       <format>html:<xsl:param>toc.max.depth=3
       <format>html:<xsl:param>toc.section.depth=2
       <format>html:<xsl:param>chunk.section.depth=1