diff --git a/utils/soca/gdas_ens_handler.h b/utils/soca/gdas_ens_handler.h
index 2241e9e9b..9e80cd542 100644
--- a/utils/soca/gdas_ens_handler.h
+++ b/utils/soca/gdas_ens_handler.h
@@ -221,7 +221,7 @@ namespace gdasapp {
       atlas::FieldSet sshTotalVarianceFs;
       sshTotalVariance.toFieldSet(sshTotalVarianceFs);
 
-      util::divideFieldSets(varianceRatioFs, sshTotalVarianceFs, false);
+      util::divideFieldSets(varianceRatioFs, sshTotalVarianceFs, sshTotalVarianceFs);
       varianceRatio.fromFieldSet(varianceRatioFs);
 
       soca::Increment stericExplainedVariance(geom, socaSshVar, postProcIncr.dt_);