diff --git a/src/main/java/mpo/dayon/common/network/message/NetworkMessage.java b/src/main/java/mpo/dayon/common/network/message/NetworkMessage.java
index 3bc8d2bc..075d24ef 100644
--- a/src/main/java/mpo/dayon/common/network/message/NetworkMessage.java
+++ b/src/main/java/mpo/dayon/common/network/message/NetworkMessage.java
@@ -6,7 +6,7 @@
 public abstract class NetworkMessage {
     private static final byte MAGIC_NUMBER = (byte) 170;
 
-    public NetworkMessage() {}
+    protected NetworkMessage() {}
 
     public abstract NetworkMessageType getType();
     public abstract int getWireSize();