diff --git a/lib/project-file.js b/lib/project-file.js
index bf128d5..fa8907d 100644
--- a/lib/project-file.js
+++ b/lib/project-file.js
@@ -42,6 +42,8 @@ module.exports = class ProjectFile extends AbstractFile {
   [AbstractFile.write] (callback) {
     if (this[kSource]) {
       fs.writeFile(this.path, this[kSource], callback)
+    } else {
+      process.nextTick(callback)
     }
   }