diff --git a/test/unit/specs/select.spec.js b/test/unit/specs/select.spec.js
index 06cbe13..87a577d 100644
--- a/test/unit/specs/select.spec.js
+++ b/test/unit/specs/select.spec.js
@@ -144,7 +144,7 @@ describe('Select.vue', () => {
 	  `);
       vm.$nextTick(() => {
         const [defaultSelect, largeSelect, smallSelect] = [...vm.$el.querySelectorAll('.ivu-select')];
-        expect(defaultSelect.className).to.equal('ivu-select ivu-select-single');
+        expect(defaultSelect.className).to.equal('ivu-select ivu-select-single ivu-select-default');
         expect(largeSelect.classList.contains('ivu-select-large')).to.equal(true);
         expect(smallSelect.classList.contains('ivu-select-small')).to.equal(true);
         done();
--
libgit2 0.21.4