diff --git a/Jamroot b/Jamroot
index 35ae3c0c47..8885fd5f24 100644
--- a/Jamroot
+++ b/Jamroot
@@ -235,12 +235,12 @@ for local l in $(all-libraries)
     use-project /boost/$(l) : libs/$(l)/build ;
 }
 
-if [ path.exists tools/inspect ]
+if [ path.exists $(BOOST_ROOT)/tools/inspect ]
 {
     use-project /boost/tools/inspect : tools/inspect/build ;
 }
 
-if [ path.exists libs/wave/tool ]
+if [ path.exists $(BOOST_ROOT)/libs/wave/tool ]
 {
     use-project /boost/libs/wave/tool : libs/wave/tool/build ;
 }