diff --git a/lib/build-files.js b/lib/build-files.js
index bca51bcb8a..46b22639fb 100755
--- a/lib/build-files.js
+++ b/lib/build-files.js
@@ -33,5 +33,11 @@ if (!fs.existsSync(CWD + '/siteConfig.js')) {
 
 // generate all static html files
 const generate = require('./server/generate.js');
-generate();
-console.log("Site built successfully. Generated files in 'build' folder.");
+generate()
+  .then(() => {
+    console.log("Site built successfully. Generated files in 'build' folder.");
+  })
+  .catch(error => {
+    console.error(error);
+    process.exit(1);
+  });