diff --git a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
index 720699533446..0628947540ca 100644
--- a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
@@ -32,6 +32,7 @@ exports_files([
     "include/llvm/IR/Intrinsics.td",
     "include/llvm/Option/OptParser.td",
     "utils/lit/lit.py",
+    # This one is needed for building and vendoring out lldb from off tree.
     "utils/lldbDataFormatters.py",
 ])