diff --git a/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java b/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
index 8faacd54..d642b99a 100644
--- a/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
+++ b/common/src/main/java/cn/wildfirechat/proto/ProtoConstants.java
@@ -56,6 +56,7 @@ public class ProtoConstants {
         int Platform_Harmony = 10;
         int Platform_HarmonyPad = 11;
         int Platform_HarmonyPC = 12;
+        int Platform_MAX = Platform_HarmonyPC;
     }
 
     //message NotifyMessage & PullMessageRequest -> type