diff --git a/Extras/Jamfile b/Extras/Jamfile
index cc0a2d24d..615dfe77a 100644
--- a/Extras/Jamfile
+++ b/Extras/Jamfile
@@ -3,7 +3,7 @@ SubDir TOP Extras ;
 SubInclude TOP Extras ConvexDecomposition ;
 SubInclude TOP Extras COLLADA_DOM ;
 SubInclude TOP Extras LibXML ;
-SubInclude TOP Extras EPA ;
-SubInclude TOP Extras ExtraSolid35 ;
-SubInclude TOP Extras quickstep ;
+#SubInclude TOP Extras EPA ;
+#SubInclude TOP Extras ExtraSolid35 ;
+#SubInclude TOP Extras quickstep ;
 #SubInclude TOP Extras GPUphysics ;