diff --git a/test/use-si-units-test.js b/test/use-si-units-test.js
index d286b57..117b245 100644
--- a/test/use-si-units-test.js
+++ b/test/use-si-units-test.js
@@ -1,5 +1,5 @@
 'use strict';
-const TextLintTester = require('textlint-tester');
+import TextLintTester from "textlint-tester";
 const tester = new TextLintTester();
 // rule
 const rule = require('../src/use-si-units');
@@ -75,3 +75,11 @@ tester.run('use-si-units with options',
         }
     ]
 });
+
+
+tester.run('the words end with number', rule, {
+    valid: [
+        '我ら5人合わせて四天王！',
+        'The 5 of us together are the Four Heavenly Kings!'
+    ],
+});