diff --git a/src/index.js b/src/index.js
index c3252b2..cfae715 100644
--- a/src/index.js
+++ b/src/index.js
@@ -6,7 +6,7 @@ export default {
         const validator = new Validator();
 
         // Apply options
-        if (typeof options.errorMessages === 'object') {
+        if (options && typeof options.errorMessages === 'object') {
             validator.setErrorMessages(options.errorMessages);
         }