diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 8d4a53d..5369f9d 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -47,6 +47,6 @@ jobs:
       - uses: r-lib/actions/check-r-package@v2
         with:
           upload-snapshots: true
-          args: 'c("--as-cran")'
-          error-on: '"warning"'
+          args: 'c("--no-manual", "--as-cran")'
+          error-on: '"error"'
           check-dir: '"check"'