diff --git a/External/Jamroot b/External/Jamroot
index bd3a3f217..3a933363b 100644
--- a/External/Jamroot
+++ b/External/Jamroot
@@ -12,7 +12,7 @@ use-project RDKit
 
 project RDKit_Externals
 	: requirements <include>.  <threading>multi
-          <library>/boost/log//boost_log
+          #<library>/boost/log//boost_log
           <include>$(RDBASE)/Code
 	  <toolset>msvc:<define>WIN32
         : default-build release ;