diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PartitionSensor/IPartitionStateProvider.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PartitionSensor/IPartitionStateProvider.cs
index faf84015..adb420b7 100644
--- a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PartitionSensor/IPartitionStateProvider.cs	
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PartitionSensor/IPartitionStateProvider.cs	
@@ -21,7 +21,7 @@ namespace PepperDash.Essentials.Core
     /// </summary>
     public interface IPartitionController : IPartitionStateProvider
     {
-        List<string> AdjacentRoomKeys { get; set; }
+        List<string> AdjacentRoomKeys { get; }
 
         void SetPartitionStatePresent();