diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index b6b78febd..6ba94055a 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -34,8 +34,8 @@ jobs:
         #  use url-encoded newline %0A
         #  https://github.com/actions/toolkit/issues/193#issuecomment-605394935
         OVERFULL_HBOX=$( \
-          texloganalyser -o build/doc/pgfmanual.log |        \
-          awk 'BEGIN {RS=""}{gsub(/\n/,"%0A",$0); print $0}' \
+          grep -r '^Overfull \\hbox' build/doc/pgfmanual.log | \
+          awk 'BEGIN {RS=""}{gsub(/\n/,"%0A",$0); print $0}'   \
         )
         echo "::warning file=build/doc/pgfmanual.log,title=Overfull hbox(es)::$OVERFULL_HBOX"