diff --git a/src/main/java/com/Acrobot/ChestShop/Listeners/Player/PlayerConnect.java b/src/main/java/com/Acrobot/ChestShop/Listeners/Player/PlayerConnect.java
index 931494a..f76503f 100644
--- a/src/main/java/com/Acrobot/ChestShop/Listeners/Player/PlayerConnect.java
+++ b/src/main/java/com/Acrobot/ChestShop/Listeners/Player/PlayerConnect.java
@@ -1,5 +1,6 @@
 package com.Acrobot.ChestShop.Listeners.Player;
 
+import com.Acrobot.Breeze.Utils.NameUtil;
 import com.Acrobot.ChestShop.ChestShop;
 import com.Acrobot.ChestShop.UUIDs.NameManager;
 import com.Acrobot.ChestShop.UUIDs.PlayerDTO;
@@ -9,6 +10,8 @@ import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerJoinEvent;
 
+import java.util.UUID;
+
 /**
  * @author Acrobot
  */
@@ -21,6 +24,15 @@ public class PlayerConnect implements Listener {
         Bukkit.getScheduler().runTaskAsynchronously(ChestShop.getPlugin(), new Runnable() {
             @Override
             public void run() {
+                String playerName = NameUtil.stripUsername(playerDTO.getName());
+                UUID uuid = NameManager.getUUID(playerName);
+
+                if (uuid != null && !playerDTO.getUniqueId().equals(uuid)) {
+                   Bukkit.getPlayer(playerDTO.getUniqueId()).kickPlayer("[ChestShop]" +
+                           "Unfortunately, this username was already used by " +
+                           "another player.");
+                }
+
                 NameManager.storeUsername(playerDTO);
             }
         });