diff --git a/src/build/readme.txt b/src/build/readme.txt
index d08368bc2..42c4a6d49 100644
--- a/src/build/readme.txt
+++ b/src/build/readme.txt
@@ -1,5 +1,8 @@
-Development code for new build system. To test, execute:
+Development code for new build system. To run unit tests for jam code, execute:
 
   bjam --debug -ftest.jam
 
-on windows or linux.
+Comprehensive tests require Python. See ../test/readme.txt
+
+
+