diff --git a/tools/run-app.js b/tools/run-app.js
index 2383697a8a..1da5a29e4c 100644
--- a/tools/run-app.js
+++ b/tools/run-app.js
@@ -705,7 +705,7 @@ _.extend(AppRunner.prototype, {
     if (self.lint) {
       var warnings = bundleResult.warnings;
 
-      if (warnings.hasMessages()) {
+      if (warnings && warnings.hasMessages()) {
         runLog.log(
           'Linting your app.\n\n' + warnings.formatMessages(),
           { arrow: true });