diff --git a/parm/config/gfs/config.ufs b/parm/config/gfs/config.ufs
index afed0c38be..85e8894cb1 100644
--- a/parm/config/gfs/config.ufs
+++ b/parm/config/gfs/config.ufs
@@ -484,7 +484,7 @@ if [[ "${skip_mom6}" == "false" ]]; then
         MOM6_DIAG_MISVAL="-1e34"
       else
         MOM6_DIAG_COORD_DEF_Z_FILE="oceanda_zgrid_75L.nc"
-        MOM6_DIAG_MISVAL="0"
+        MOM6_DIAG_MISVAL="0.0"
       fi
       MOM6_ALLOW_LANDMASK_CHANGES='False'
       TOPOEDITS=""