diff --git a/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java b/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
index 827253d..4b9068d 100644
--- a/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
+++ b/app/src/main/java/com/example/cosmosclient/services/CosmosBackgroundService.java
@@ -601,7 +601,7 @@
         //HashMapを順番に実行
         for(HashMap.Entry<Integer, ArrayList<Feature>> e : codeToFeature.entrySet()) {
             //ArrayList<Feature>>を回していく
-            for(int i=e.getValue().size(); i >= 0;i--) {
+            for(int i=e.getValue().size() - 1; i >= 0;i--) {
                 float[] distance = getDistance(NowLat, NowLon, e.getValue().get(i).getLocation().getLatitude(), e.getValue().get(i).getLocation().getLongitude());
                 // distance[0] = [２点間の距離]
                 //50m圏外のFeatureを削除