diff --git a/src/main/java/cactusServer/entities/Object.java b/src/main/java/cactusServer/entities/Object.java
index b8cab8e..d3ae812 100644
--- a/src/main/java/cactusServer/entities/Object.java
+++ b/src/main/java/cactusServer/entities/Object.java
@@ -88,6 +88,10 @@
 		private boolean moveable; // �“�
 		private double cof; // ���C�W��
 
+		private Attribute() {
+			
+		}
+		
 		public Attribute(boolean moveable, double cof) {
 			setMoveable(moveable);
 			setCof(cof);