diff --git a/.github/workflows/test-ui.yaml b/.github/workflows/test-ui.yaml
index 15de04cf7..213ac1c6a 100644
--- a/.github/workflows/test-ui.yaml
+++ b/.github/workflows/test-ui.yaml
@@ -38,6 +38,7 @@ jobs:
       run: |
         wait-for-it --service 127.0.0.1:8188 -t 600
         npm ci
+        npm run build
         npm run test:generate
         npm test -- --verbose
       working-directory: ComfyUI_frontend/tests-ui
diff --git a/README.md b/README.md
index 233c4a2cd..32d450840 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,7 @@ in ComfyUI's front-end code.
 
 ## Test
 
+- `npm run build` to build the front end
 - `cd tests-ui`
 - `npm i` to install all test dependencies
 - `npm run test:generate` to fetch `data/object_info.json`