diff --git a/Source/ACE.Server/WorldObjects/Hooker.cs b/Source/ACE.Server/WorldObjects/Hooker.cs
index a006ac8e65..108b708bb8 100644
--- a/Source/ACE.Server/WorldObjects/Hooker.cs
+++ b/Source/ACE.Server/WorldObjects/Hooker.cs
@@ -48,7 +48,7 @@ public override ActivationResult CheckUseRequirements(WorldObject activator)
                 return new ActivationResult(new GameEventWeenieError(player.Session, WeenieError.YouAreNotPermittedToUseThatHook));
 
             var myHookGroup = HookGroup ?? HookGroupType.Undef;
-            if ((myHookGroup == HookGroupType.PortalItems || myHookGroup == HookGroupType.SpellTeachingItems) && hook.HouseType != HouseType.Mansion)
+            if ((myHookGroup == HookGroupType.PortalItems || myHookGroup == HookGroupType.SpellTeachingItems) && hook.House.HouseType != HouseType.Mansion)
                 return new ActivationResult(new GameEventWeenieError(player.Session, WeenieError.YouAreNotPermittedToUseThatHook));
 
             var baseRequirements = base.CheckUseRequirements(activator);