diff --git a/lib/app/utils.js b/lib/app/utils.js
index e782671b7..f6b34f073 100644
--- a/lib/app/utils.js
+++ b/lib/app/utils.js
@@ -84,7 +84,7 @@ export function promisify (fn, context) {
   } else {
     promise = fn(context)
   }
-  if (!promise || (!(promise instanceof Promise) && (typeof promise.then !== 'function')))
+  if (!promise || (!(promise instanceof Promise) && (typeof promise.then !== 'function'))) {
     promise = Promise.resolve(promise)
   }
   return promise