diff --git a/MobArena.jar b/MobArena.jar
index 6eebe73..ff7fe1e 100644
Binary files a/MobArena.jar and b/MobArena.jar differ
diff --git a/src/com/garbagemule/MobArena/MACommands.java b/src/com/garbagemule/MobArena/MACommands.java
index 8163264..89a6619 100644
--- a/src/com/garbagemule/MobArena/MACommands.java
+++ b/src/com/garbagemule/MobArena/MACommands.java
@@ -152,7 +152,7 @@ public class MACommands implements CommandExecutor
                 error = MAUtils.tellPlayer(p, MAMessages.get(Msg.JOIN_ARENA_NOT_ENABLED));
             else if (!arena.setup || arena.edit)
                 error = MAUtils.tellPlayer(p, MAMessages.get(Msg.JOIN_ARENA_NOT_SETUP));
-            else if (arena.running && arena.notifyPlayers.add(p))
+            else if (arena.running && (arena.notifyPlayers.contains(p) || arena.notifyPlayers.add(p)))
                 error = MAUtils.tellPlayer(p, MAMessages.get(Msg.JOIN_ARENA_IS_RUNNING));
             else if (arena.arenaPlayers.contains(p))
                 error = MAUtils.tellPlayer(p, MAMessages.get(Msg.JOIN_ALREADY_PLAYING));