diff --git a/test/BoostBuild.py b/test/BoostBuild.py
index dc9974a41..05ebe53e5 100644
--- a/test/BoostBuild.py
+++ b/test/BoostBuild.py
@@ -252,7 +252,7 @@ class Tester(TestCmd.TestCmd):
                     break
             else:
                 print "Cannot find built Boost.Jam"
-                os.exit(1)
+                sys.exit(1)
 
         verbosity = ['-d0', '--quiet']
         if '--verbose' in sys.argv: