diff --git a/static/launcher.js b/static/launcher.js
index f7d49b56d..ac00e2b89 100644
--- a/static/launcher.js
+++ b/static/launcher.js
@@ -60,7 +60,7 @@ const checkIsCycle = async () => {
   }
 
   const delta = rightNow - backThen;
-  await promisify(mkdirp)(dir);
+  await mkdirp(dir);
   await promisify(fs.writeFile)(filePath, rightNow);
 
   // If the last startup was less than 5s ago, something's not okay.