1 files changed, 1 insertions, 1 deletions
diff --git a/bootstraptest/runner.rb b/bootstraptest/runner.rb
index 047633c788..df444f3181 100755
--- a/bootstraptest/runner.rb
+++ b/bootstraptest/runner.rb
@@ -90,7 +90,7 @@ def main
 Usage: #{File.basename($0, '.*')} --ruby=PATH [--sets=NAME,NAME,...]
         --sets=NAME,NAME,...        Name of test sets.
         --dir=DIRECTORY             Working directory.
-                                    default: /tmp/bootstraptest.tmpwd
+                                    default: /tmp/bootstraptestXXXXX.tmpwd
     -s, --stress                    stress test.
     -v, --verbose                   Output test name before exec.
     -q, --quiet                     Don\'t print header message.