diff --git a/bin/mark-non-labs-packages-private.js b/bin/mark-non-labs-packages-private.js
index 81cd73995c70..6810f92f7a1a 100755
--- a/bin/mark-non-labs-packages-private.js
+++ b/bin/mark-non-labs-packages-private.js
@@ -23,7 +23,7 @@ async function markNonLabsPackagesPrivate() {
     const dir = path.relative(pkg.rootPath, pkg.location);
     if (dir.startsWith('labs')) continue;
     const data = readJsonFile(pkg.manifestLocation);
-    let modified = !data.private;
+    const modified = !data.private;
     if (!modified) continue;
     data.private = true;
     writeJsonFile(pkg.manifestLocation, data, dir);