diff --git a/tests/grib_dump_samples.sh b/tests/grib_dump_samples.sh
index db5baaaa4..327c39aef 100755
--- a/tests/grib_dump_samples.sh
+++ b/tests/grib_dump_samples.sh
@@ -31,6 +31,7 @@ samples="
 for sfile in $samples; do
   sample="$ECCODES_SAMPLES_PATH/$sfile"
   ${tools_dir}/grib_dump -O $sample >/dev/null
+  ${tools_dir}/grib_dump -atH $sample >/dev/null
 done
 
 # Test grib_dump with -t option