diff --git a/npm/ng-packs/packages/schematics/src/commands/change-theme/style-map.ts b/npm/ng-packs/packages/schematics/src/commands/change-theme/style-map.ts
index 0b9f724e57..4bf4300a2b 100644
--- a/npm/ng-packs/packages/schematics/src/commands/change-theme/style-map.ts
+++ b/npm/ng-packs/packages/schematics/src/commands/change-theme/style-map.ts
@@ -196,6 +196,11 @@ styleMap.set(ThemeOptionsEnum.LeptonX, [
     inject: true,
     bundleName: 'bootstrap-icons',
   },
+  {
+    input: 'node_modules/ng-zorro-antd/tree/style/index.min.css',
+    inject: false,
+    bundleName: 'ng-zorro-antd-tree',
+  },
 ]);
 styleMap.set(ThemeOptionsEnum.LeptonXLite, [
   {