diff --git a/src/PepperDash.Essentials.Core/Room/IHasDestinationList.cs b/src/PepperDash.Essentials.Core/Room/IHasDestinationList.cs
index a731e672..bab1b3d2 100644
--- a/src/PepperDash.Essentials.Core/Room/IHasDestinationList.cs
+++ b/src/PepperDash.Essentials.Core/Room/IHasDestinationList.cs
@@ -1,14 +1,16 @@
 using System.Collections.Generic;
-using PepperDash.Essentials.Core;
 
-
-/// <summary>
-/// Interface for rooms with a list of destinations
-/// </summary>
-public interface IHasDestinationList
+namespace PepperDash.Essentials.Core
 {
+
     /// <summary>
-    /// Gets the dictionary of destinations.
+    /// Interface for rooms with a list of destinations
     /// </summary>
-    Dictionary<string, IRoutingSink> Destinations { get; }
+    public interface IHasDestinationList
+    {
+        /// <summary>
+        /// Gets the dictionary of destinations.
+        /// </summary>
+        Dictionary<string, IRoutingSink> Destinations { get; }
+    }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/Room/IHasSourceList.cs b/src/PepperDash.Essentials.Core/Room/IHasSourceList.cs
index c3f0d70f..0e87f58a 100644
--- a/src/PepperDash.Essentials.Core/Room/IHasSourceList.cs
+++ b/src/PepperDash.Essentials.Core/Room/IHasSourceList.cs
@@ -1,14 +1,15 @@
 using System.Collections.Generic;
-using PepperDash.Essentials.Core;
-
-
-/// <summary>
-/// Interface for rooms with a list of destinations
-/// </summary>
-public interface IHasSourceList
+namespace PepperDash.Essentials.Core
 {
+
     /// <summary>
-    /// Gets the list of sources.
+    /// Interface for rooms with a list of destinations
     /// </summary>
-    Dictionary<string, SourceListItem> SourceList { get; }
+    public interface IHasSourceList
+    {
+        /// <summary>
+        /// Gets the list of sources.
+        /// </summary>
+        Dictionary<string, SourceListItem> SourceList { get; }
+    }
 }
\ No newline at end of file