diff --git a/.github/workflows/pr-preview.yml b/.github/workflows/pr-preview.yml
index c873e2b08..e30278c7e 100644
--- a/.github/workflows/pr-preview.yml
+++ b/.github/workflows/pr-preview.yml
@@ -60,7 +60,7 @@ jobs:
 
       - name: ⚙️ Install and Build
         run: |
-          echo "GH_BASE_URL="/teia-ui/previews/pr-${{ github.event.pull_request.number }}/" >> $GITHUB_ENV
+          echo "GH_BASE_URL=/teia-ui/previews/pr-${{ github.event.pull_request.number }}/" >> $GITHUB_ENV
           npm ci
           npm run build