1 files changed, 1 insertions, 1 deletions

diff --git a/src/WixToolset.Core/HarvesterCore.cs b/src/WixToolset.Core/HarvesterCore.cs
index 92a057d8..70991979 100644
--- a/src/WixToolset.Core/HarvesterCore.cs
+++ b/src/WixToolset.Core/HarvesterCore.cs
@@ -10,7 +10,7 @@ namespace WixToolset.Core
     /// <summary>
     /// The WiX Toolset harvester core.
     /// </summary>
-    public sealed class HarvesterCore : IHarvesterCore
+    public class HarvesterCore : IHarvesterCore
     {
         public IMessaging Messaging { get; set; }