diff --git a/build/boost/doc/Jamfile.jam b/build/boost/doc/Jamfile.jam
index 96ff40b..9ffa8e6 100644
--- a/build/boost/doc/Jamfile.jam
+++ b/build/boost/doc/Jamfile.jam
@@ -32,12 +32,7 @@ boostbook standalone
     mock
   :
     <dependency>reference
-#    <xsl:param>boost.root=../../../..
-#    <xsl:param>img.src.path=../images
     <xsl:param>boost.image.src=../images/boost.png
-#    <xsl:param>boost.image.alt="\"My Project\""
-#    <xsl:param>boost.image.w=100
-#    <xsl:param>boost.image.h=50
     <xsl:param>chunk.first.sections=1
     <xsl:param>nav.layout=horizontal
 ;