diff --git a/setup_links.py b/setup_links.py
index 450def9a20..f7fa9ff073 100755
--- a/setup_links.py
+++ b/setup_links.py
@@ -69,6 +69,7 @@ DIRECTORIES = [
   'tools/generate_stubs',
   'tools/gn',
   'tools/gyp',
+  'tools/mb',
   'tools/memory',
   'tools/protoc_wrapper',
   'tools/python',