diff --git a/src/main/java/com/elchologamer/userlogin/listener/JoinQuitListener.java b/src/main/java/com/elchologamer/userlogin/listener/JoinQuitListener.java
index bed5fc0..4ce7bdd 100644
--- a/src/main/java/com/elchologamer/userlogin/listener/JoinQuitListener.java
+++ b/src/main/java/com/elchologamer/userlogin/listener/JoinQuitListener.java
@@ -2,10 +2,18 @@
 
 import com.elchologamer.userlogin.ULPlayer;
 import com.elchologamer.userlogin.UserLogin;
+
+import net.md_5.bungee.api.ChatColor;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
+import org.bukkit.event.player.AsyncPlayerPreLoginEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
 import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.event.player.AsyncPlayerPreLoginEvent.Result;
 
 public class JoinQuitListener implements Listener {
 
@@ -17,6 +25,21 @@ public void onPlayerJoin(PlayerJoinEvent event) {
         ULPlayer.get(event.getPlayer()).onJoin(false);
     }
 
+    @EventHandler(priority = EventPriority.LOWEST)
+    public void onPlayerPreLogin(AsyncPlayerPreLoginEvent event) {
+        // Check if player already online
+        for(Player player : Bukkit.getOnlinePlayers()) {
+            ULPlayer ulPlayer = ULPlayer.get(player);
+            if(player.getName().equalsIgnoreCase(event.getName())) {
+                if(ulPlayer.isLoggedIn()) {
+                    event.setLoginResult(Result.KICK_OTHER);
+                    event.setKickMessage(ChatColor.RED + "This player is already online!");
+                    return;
+                }
+            }
+        }
+    }
+
     @EventHandler
     public void onPlayerQuit(PlayerQuitEvent event) {
         ULPlayer.get(event.getPlayer()).onQuit();