diff --git a/jobs/rocoto/ocnpost.sh b/jobs/rocoto/ocnpost.sh
index 96d32cc26d..e674e1c4df 100755
--- a/jobs/rocoto/ocnpost.sh
+++ b/jobs/rocoto/ocnpost.sh
@@ -56,7 +56,7 @@ for fhr in ${fhrlst}; do
   # shellcheck disable=
   declare -x VDATE
   cd "${DATA}" || exit 2
-  if (( fhr > 0 )); then
+  if (( 10#${fhr} > 0 )); then
     # TODO: This portion calls NCL scripts that are deprecated (see Issue #923)
     if [[ "${MAKE_OCN_GRIB:-YES}" == "YES" ]]; then
       export MOM6REGRID=${MOM6REGRID:-${HOMEgfs}}