diff --git a/.github/workflows/easycloud-build.yml b/.github/workflows/easycloud-build.yml
index 542e7b3f3d04c..28a807976b442 100644
--- a/.github/workflows/easycloud-build.yml
+++ b/.github/workflows/easycloud-build.yml
@@ -7,15 +7,15 @@ name: EasyCloud Build
 on:
   pull_request:
     paths:
-      - '.github/workflows/**'
-      - 'src/**'
-      - 'apps/**/appinfo/info.xml'
-      - 'package.json'
-      - 'package-lock.json'
-      - 'tsconfig.json'
-      - '**.js'
-      - '**.ts'
-      - '**.vue'
+      - ".github/workflows/**"
+      - "src/**"
+      - "apps/**/appinfo/info.xml"
+      - "package.json"
+      - "package-lock.json"
+      - "tsconfig.json"
+      - "**.js"
+      - "**.ts"
+      - "**.vue"
   push:
     branches:
       - main
@@ -72,6 +72,16 @@ jobs:
           npm run build
           cd ../..
 
+      - name: Install dependencies & build IONOS theme custom elements
+        env:
+          CYPRESS_INSTALL_BINARY: 0
+          PUPPETEER_SKIP_DOWNLOAD: true
+        run: |
+          cd themes/nc-ionos-theme/IONOS
+          npm ci
+          npm run build
+          cd ../..
+
       - name: Add config partials
         run: |
           cp IONOS/configs/*.config.php config/