diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
index 0497854..879f77d 100644
--- a/.gitea/workflows/build.yaml
+++ b/.gitea/workflows/build.yaml
@@ -31,8 +31,8 @@ jobs:
           zip -r ../presentation.zip .
       - name: upload to pages
         run: |
-          curl https://pages.ct.cozytren.ch \
-            -X PUT \
+          curl -X PUT --fail \
+            https://pages.ct.cozytren.ch \
             -T ./presentation.zip \
             -H "Content-Type: application/zip" \
             -H "Authorization: Pages ${{ secrets.GIT_PAGES_TOKEN }}"