diff --git a/src/main/java/cactusServer/entities/Player.java b/src/main/java/cactusServer/entities/Player.java
index 2841ef7..108e71a 100644
--- a/src/main/java/cactusServer/entities/Player.java
+++ b/src/main/java/cactusServer/entities/Player.java
@@ -141,9 +141,8 @@
 		for (String areaId : instance.getAreaIdSet()) {
 			Area area = instance.getArea(areaId);
 			if (area.isSurroundingPosition(position)) {
-				int subStringEndIndex = areaURI.length() - Area.UNIQUE_ID_LENGTH;
-				StringBuilder newAreaURI = new StringBuilder();
-				return newAreaURI.append(areaURI.substring(0, subStringEndIndex)).append(areaId).toString();
+				int subStringEndIndex = areaURI.length() - Area.UNIQUE_ID_LENGTH; // �c/{instanceId}/areas/ �܂�
+				return areaURI.substring(0, subStringEndIndex) + areaId;
 			}
 		}
 		return "";