diff --git a/bootstraptest/runner.rb b/bootstraptest/runner.rb
old mode 100644
new mode 100755
index aff5a54ee7..46638a5c90
--- a/bootstraptest/runner.rb
+++ b/bootstraptest/runner.rb
@@ -1,3 +1,6 @@
+#!/bin/sh
+exec ruby -x "$0" "$@"
+#!ruby
 # $Id$
 
 # NOTE: