diff --git a/Framework/Constants/Language.cs b/Framework/Constants/Language.cs
index d914aa62f..bebb28aba 100644
--- a/Framework/Constants/Language.cs
+++ b/Framework/Constants/Language.cs
@@ -17,7 +17,7 @@
 
 namespace Framework.Constants
 {
-    public enum Language : uint
+    public enum Language : int
     {
         Universal = 0,
         Orcish = 1,
@@ -43,7 +43,7 @@ namespace Framework.Constants
         PandarenAlliance = 43,
         PandarenHorde = 44,
         Rikkitun = 168,
-        Addon = 0xffffffff                        // Used By Addons, In 2.4.0 Not Exist, Replaced By Messagetype?
+        Addon = -1                        // Used By Addons, In 2.4.0 Not Exist, Replaced By Messagetype?
     }
 
     public enum CypherStrings
diff --git a/Game/Network/Packets/ChatPackets.cs b/Game/Network/Packets/ChatPackets.cs
index ac4d12549..db32f4464 100644
--- a/Game/Network/Packets/ChatPackets.cs
+++ b/Game/Network/Packets/ChatPackets.cs
@@ -234,7 +234,7 @@ namespace Game.Network.Packets
         public override void Write()
         {
             _worldPacket.WriteUInt8(SlashCmd);
-            _worldPacket.WriteUInt8(_Language);
+            _worldPacket.WriteInt8(_Language);
             _worldPacket.WritePackedGuid(SenderGUID);
             _worldPacket.WritePackedGuid(SenderGuildGUID);
             _worldPacket.WritePackedGuid(SenderAccountGUID);