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