diff --git a/PKHeX.Core/Legality/Encounters/EncounterSlot/EncounterSlot.cs b/PKHeX.Core/Legality/Encounters/EncounterSlot/EncounterSlot.cs
index b90b84a57..07976c943 100644
--- a/PKHeX.Core/Legality/Encounters/EncounterSlot/EncounterSlot.cs
+++ b/PKHeX.Core/Legality/Encounters/EncounterSlot/EncounterSlot.cs
@@ -17,8 +17,8 @@ public abstract class EncounterSlot : IEncounterable, ILocation
 
         internal readonly EncounterArea Area;
         public GameVersion Version => Area.Version;
-        public int Location { get => Area.Location; set { } }
-        public int EggLocation { get => 0; set { } }
+        public int Location => Area.Location;
+        public int EggLocation => 0;
 
         protected EncounterSlot(EncounterArea area) => Area = area;
 
diff --git a/PKHeX.Core/Legality/Structures/ILocation.cs b/PKHeX.Core/Legality/Structures/ILocation.cs
index b48c07372..c580374ac 100644
--- a/PKHeX.Core/Legality/Structures/ILocation.cs
+++ b/PKHeX.Core/Legality/Structures/ILocation.cs
@@ -2,8 +2,8 @@
 {
     public interface ILocation
     {
-        int Location { get; set; }
-        int EggLocation { get; set; }
+        int Location { get; }
+        int EggLocation { get; }
     }
 
     public static partial class Extensions