diff --git a/lib/plugins/helper/meta_generator.js b/lib/plugins/helper/meta_generator.js
index 590d6c8d95..20b7613939 100755
--- a/lib/plugins/helper/meta_generator.js
+++ b/lib/plugins/helper/meta_generator.js
@@ -1,7 +1,7 @@
 'use strict';
 
 function metaGeneratorHelper() {
-  return `<meta name="generator" content="Hexo ${this.version}">`;
+  return `<meta name="generator" content="Hexo ${this.env.version}">`;
 }
 
 module.exports = metaGeneratorHelper;
diff --git a/test/scripts/helpers/meta_generator.js b/test/scripts/helpers/meta_generator.js
index b08cc94f11..98d7b75175 100755
--- a/test/scripts/helpers/meta_generator.js
+++ b/test/scripts/helpers/meta_generator.js
@@ -7,6 +7,10 @@ describe('meta_generator', () => {
   const metaGeneratorHelper = require('../../../lib/plugins/helper/meta_generator').bind(hexo);
 
   it('default', () => {
-    metaGeneratorHelper().should.eql(`<meta name="generator" content="Hexo ${hexo.version}">`);
+    const { version } = hexo;
+    const versionType = typeof version;
+
+    versionType.should.not.eql('undefined');
+    metaGeneratorHelper().should.eql(`<meta name="generator" content="Hexo ${version}">`);
   });
 });