diff --git a/components/table/demo/multiple-sorter.ts b/components/table/demo/multiple-sorter.ts
index d8110d77e8..4fddd84ceb 100644
--- a/components/table/demo/multiple-sorter.ts
+++ b/components/table/demo/multiple-sorter.ts
@@ -33,7 +33,7 @@ export class NzDemoTableMultipleSorterComponent {
   listOfColumn = [
     {
       title: 'Name',
-      compare: null,
+      compare: (a: DataItem, b: DataItem) => a.name.localeCompare(b.name),
       priority: false
     },
     {