diff --git a/packages/mixins/i18n.js b/packages/mixins/i18n.js
index 63cb675e2..07d47daff 100644
--- a/packages/mixins/i18n.js
+++ b/packages/mixins/i18n.js
@@ -6,8 +6,13 @@ export default {
     $t() {
       const { name } = this.$options;
       const prefix = name ? camelize(name) + '.' : '';
-      const messages = this.$vantMessages[this.$vantLang];
 
+      if (process.env.NODE_ENV !== 'production' && !this.$vantMessages) {
+        console.warn('[Vant] Locale not correctly registered.');
+        return () => '';
+      }
+
+      const messages = this.$vantMessages[this.$vantLang];
       return (path, ...args) => {
         const message = get(messages, prefix + path) || get(messages, path);
         return typeof message === 'function' ? message.apply(null, args) : message;