diff --git a/src/store/utils/getGeoJSON.ts b/src/store/utils/getGeoJSON.ts
index fa558de..91076ee 100644
--- a/src/store/utils/getGeoJSON.ts
+++ b/src/store/utils/getGeoJSON.ts
@@ -31,7 +31,7 @@ export function getGeoJSON(state: IMapOptions): GeoJSON.FeatureCollection {
       properties.water = true;
     }
 
-    coordinates.forEach((shape) => {
+    coordinates = coordinates.map((shape) => {
       if (turf.booleanClockwise(shape)) {
         shape = shape.reverse();
       }
@@ -43,6 +43,7 @@ export function getGeoJSON(state: IMapOptions): GeoJSON.FeatureCollection {
           shape.push([...shape[0]]);
         }
       }
+      return shape;
     });
     features.push({
       type: "Feature",