diff --git a/src/main/java/net/lenni0451/miniconnect/Main.java b/src/main/java/net/lenni0451/miniconnect/Main.java
index 7c57d00..43537e8 100644
--- a/src/main/java/net/lenni0451/miniconnect/Main.java
+++ b/src/main/java/net/lenni0451/miniconnect/Main.java
@@ -1,10 +1,7 @@
 package net.lenni0451.miniconnect;
 
 import net.lenni0451.miniconnect.proxy.StateRegistry;
-import net.lenni0451.miniconnect.proxy.event.HAProxyEnableHandler;
-import net.lenni0451.miniconnect.proxy.event.PacketHandlerRegistry;
-import net.lenni0451.miniconnect.proxy.event.RedirectionHandler;
-import net.lenni0451.miniconnect.proxy.event.ViaLoadHandler;
+import net.lenni0451.miniconnect.proxy.event.*;
 import net.lenni0451.miniconnect.server.LobbyServerInitializer;
 import net.raphimc.netminecraft.netty.connection.NetServer;
 import net.raphimc.viaproxy.ViaProxy;
@@ -46,6 +43,7 @@ public void onEnable() {
         ViaProxy.EVENT_MANAGER.register(new PacketHandlerRegistry());
         ViaProxy.EVENT_MANAGER.register(new ViaLoadHandler());
         ViaProxy.EVENT_MANAGER.register(new HAProxyEnableHandler());
+        ViaProxy.EVENT_MANAGER.register(new OnlineModeHandler());
     }
 
 }
diff --git a/src/main/java/net/lenni0451/miniconnect/proxy/event/OnlineModeHandler.java b/src/main/java/net/lenni0451/miniconnect/proxy/event/OnlineModeHandler.java
new file mode 100644
index 0000000..1aad5b2
--- /dev/null
+++ b/src/main/java/net/lenni0451/miniconnect/proxy/event/OnlineModeHandler.java
@@ -0,0 +1,14 @@
+package net.lenni0451.miniconnect.proxy.event;
+
+import net.lenni0451.lambdaevents.EventHandler;
+import net.raphimc.viaproxy.plugins.events.JoinServerRequestEvent;
+
+public class OnlineModeHandler {
+
+    @EventHandler(priority = Integer.MIN_VALUE)
+    public void onJoinServerRequest(final JoinServerRequestEvent event) {
+        if (event.isCancelled()) return;
+        event.getProxyConnection().kickClient("§cThe server is in online mode and requires authentication.\n§aPlease reconnect and authenticate by clicking on Login (key).");
+    }
+
+}