diff --git a/lib/watcher.js b/lib/watcher.js
index 7a16667e7..cfc056f5e 100644
--- a/lib/watcher.js
+++ b/lib/watcher.js
@@ -67,8 +67,7 @@ function watch (patterns, excludes, fileList, usePolling, emitter) {
     .on('error', log.debug.bind(log))
 
   emitter.on('exit', (done) => {
-    watcher.close()
-    done()
+    watcher.close().then(() => done())
   })
 
   return watcher