diff --git a/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java b/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java
index 17b53ab..2252aa0 100644
--- a/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java
+++ b/src/net/milkbowl/vault/permission/plugins/Permission_Privileges.java
@@ -114,7 +114,7 @@ public class Permission_Privileges extends Permission {
     public boolean playerInGroup(String world, String player, String group) {
         OfflinePlayer p = Bukkit.getOfflinePlayer(player);
         Group g = privs.getGroupManager().getGroup(p);
-        return g != null && g.getGroupTree().contains(group);
+        return g != null && g.isMemberOf(group);
     }
 
     @Override