diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Forcefield.java b/eco-core/core-plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Forcefield.java
index c016b8e1..f46df890 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Forcefield.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/ecoenchants/enchantments/ecoenchants/normal/Forcefield.java
@@ -59,7 +59,7 @@ public class Forcefield extends EcoEnchant implements TimedRunnable {
 
     @Override
     public void run() {
-        players.forEach((player, level) -> {
+        new HashMap<>(players).forEach((player, level) -> {
             if (this.getDisabledWorlds().contains(player.getWorld())) {
                 return;
             }