diff --git a/apps/cm/src/pages/dashboard/ui/sn-old-ppl.tsx b/apps/cm/src/pages/dashboard/ui/sn-old-ppl.tsx
index 4b13aae31..b1a34139c 100644
--- a/apps/cm/src/pages/dashboard/ui/sn-old-ppl.tsx
+++ b/apps/cm/src/pages/dashboard/ui/sn-old-ppl.tsx
@@ -56,11 +56,13 @@ export default function SnOldPpl() {
     });
 
     oldPplLenData.forEach(item => {
-      if (!dataByZone[item.zoneNm]) {
-        dataByZone[item.zoneNm] = {};
+      let zoneData = dataByZone[item.zoneNm];
+      if (!zoneData) {
+        zoneData = {};
+        dataByZone[item.zoneNm] = zoneData;
       }
       if (item.yearGroup) {
-        dataByZone[item.zoneNm][item.yearGroup] = item.sumPrlgVl;
+        zoneData[item.yearGroup] = item.sumPrlgVl;
       }
     });