diff --git a/prepare.js b/prepare.js
index 6c9c084..9c0f4ef 100644
--- a/prepare.js
+++ b/prepare.js
@@ -7,8 +7,8 @@ module.exports = (app) => {
     function renderAndSave(file, template, options) {
         file = path.join(staticDir, file);
         app.render(template, options, (e, r) => {
-            if (e) return fs.writeFile(file, "<!DOCTYPE html><html><head><title>Something went wrong!</title></head><body><h1>Something went wrong!</h1><p>Could not render this page! Please contact the administrator!</p></body></html>");
-            return fs.writeFile(file, r);
+            if (e) return fs.writeFile(file, "<!DOCTYPE html><html><head><title>Something went wrong!</title></head><body><h1>Something went wrong!</h1><p>Could not render this page! Please contact the administrator!</p></body></html>", () => undefined);
+            return fs.writeFile(file, r, () => undefined);
         });
     }
 
