diff --git a/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java b/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
index f1f383a7..1d3d2824 100644
--- a/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
+++ b/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
@@ -1,5 +1,6 @@
 package net.md_5.bungee.connection;
 
+import com.google.common.base.Preconditions;
 import net.md_5.bungee.BungeeCord;
 import net.md_5.bungee.EntityMap;
 import net.md_5.bungee.UserConnection;
@@ -81,6 +82,8 @@ public class UpstreamBridge extends PacketHandler
     @Override
     public void handle(Chat chat) throws Exception
     {
+        Preconditions.checkArgument( chat.getMessage().length() < 100, "Chat message too long" ); // Mojang limit, check on updates
+
         ChatEvent chatEvent = new ChatEvent( con, con.getServer(), chat.getMessage() );
         if ( !bungee.getPluginManager().callEvent( chatEvent ).isCancelled() )
         {