diff --git a/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs b/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs
index 9f70b98c5a..eb5b0a6a13 100644
--- a/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs
+++ b/OpenSim/Region/Environment/Interfaces/ITerrainChannel.cs
@@ -1,7 +1,7 @@
 using System;
 namespace OpenSim.Region.Environment.Interfaces
 {
-    interface ITerrainChannel
+    public interface ITerrainChannel
     {
         int Height { get; }
         double this[int x, int y] { get; set; }