diff --git a/.github/workflows/portal-documentation.yaml b/.github/workflows/portal-documentation.yaml
index d5beaae9ab..e96ae75be0 100644
--- a/.github/workflows/portal-documentation.yaml
+++ b/.github/workflows/portal-documentation.yaml
@@ -87,6 +87,7 @@ jobs:
               echo '```' >> $GITHUB_STEP_SUMMARY
               cat sphinx-warnings.log >> $GITHUB_STEP_SUMMARY
               echo '```' >> $GITHUB_STEP_SUMMARY
+              exit 1
             fi