diff --git a/ush/forecast_postdet.sh b/ush/forecast_postdet.sh
index 3aadaa45e0..421c8a9fad 100755
--- a/ush/forecast_postdet.sh
+++ b/ush/forecast_postdet.sh
@@ -885,7 +885,7 @@ CICE_postdet() {
   if [[ "${RUN}" =~ "gdas" ]]; then
     cice_hist_avg=".false., .false., .false., .false., .false."   # DA needs instantaneous
   else
-    cice_hist_avg=".true."    # P8 wants averaged over histfreq_n
+    cice_hist_avg=".true., .true., .true., .true., .true."    # P8 wants averaged over histfreq_n
   fi
 
   FRAZIL_FWSALT=${FRAZIL_FWSALT:-".true."}