diff --git a/src/components/checkbox/nz-checkbox.component.ts b/src/components/checkbox/nz-checkbox.component.ts
index cba8a547d3..0c091a3a73 100644
--- a/src/components/checkbox/nz-checkbox.component.ts
+++ b/src/components/checkbox/nz-checkbox.component.ts
@@ -109,6 +109,6 @@ export class NzCheckboxComponent implements OnInit, ControlValueAccessor {
   }
 
   ngOnInit() {
-    this._render.setAttribute(this._el, 'class', `${this._prefixCls}-wrapper`);
+    this._render.addClass(this._el, `${this._prefixCls}-wrapper`);
   }
 }