diff --git a/ush/wave_prnc_cur.sh b/ush/wave_prnc_cur.sh
index ba7656fc85..14e9b272a3 100755
--- a/ush/wave_prnc_cur.sh
+++ b/ush/wave_prnc_cur.sh
@@ -40,7 +40,8 @@ ncks -v u_velocity,v_velocity cur_temp2.nc cur_temp3.nc
 mv -f cur_temp3.nc cur_uv_${PDY}_${fext}${fh3}_flat.nc
 
 # Convert to regular lat lon file
-
+# If weights need to be regenerated due to CDO ver change, use:
+# $CDO genbil,r4320x2160 rtofs_glo_2ds_f000_3hrly_prog.nc weights.nc
 cp ${FIXwave}/weights_rtofs_to_r4320x2160.nc ./weights.nc
   
 # Interpolate to regular 5 min grid