diff --git a/src/net/mc_pandacraft/java/plugin/pandacraftutils/modules/AfkManager.java b/src/net/mc_pandacraft/java/plugin/pandacraftutils/modules/AfkManager.java
index 0fb8799..cb8c1ab 100644
--- a/src/net/mc_pandacraft/java/plugin/pandacraftutils/modules/AfkManager.java
+++ b/src/net/mc_pandacraft/java/plugin/pandacraftutils/modules/AfkManager.java
@@ -54,7 +54,7 @@ public class AfkManager extends BukkitRunnable implements Listener  {
 	public void run() {
 		// methode exécutée toute les secondes
 		Collection<OnlinePlayer> oPlayers = OnlinePlayerManager.getInstance().getAll();
-		for (OnlinePlayer ap : oPlayers)
+		for (OnlinePlayer ap : oPlayers.toArray(new OnlinePlayer[oPlayers.size()]))
 		{	// parcours de tout les joueurs
 			if (ap == null)
 				continue;
diff --git a/src/net/mc_pandacraft/java/plugin/pandacraftutils/players/OnlinePlayerManager.java b/src/net/mc_pandacraft/java/plugin/pandacraftutils/players/OnlinePlayerManager.java
index 596d560..d01706c 100644
--- a/src/net/mc_pandacraft/java/plugin/pandacraftutils/players/OnlinePlayerManager.java
+++ b/src/net/mc_pandacraft/java/plugin/pandacraftutils/players/OnlinePlayerManager.java
@@ -1,7 +1,6 @@
 package net.mc_pandacraft.java.plugin.pandacraftutils.players;
 
 import java.util.Collection;
-import java.util.Collections;
 import java.util.HashMap;
 
 import net.mc_pandacraft.java.plugin.pandacraftutils.PandacraftUtils;
@@ -81,7 +80,7 @@ public final class OnlinePlayerManager implements Listener {
 	}
 	
 	public Collection<OnlinePlayer> getAll() {
-		return Collections.unmodifiableCollection(players.values());
+		return players.values();
 	}