1 files changed, 1 insertions, 1 deletions

diff --git a/src/wix/heat/RegFileHarvester.cs b/src/wix/heat/RegFileHarvester.cs
index b8b1d44d..1377d413 100644
--- a/src/wix/heat/RegFileHarvester.cs
+++ b/src/wix/heat/RegFileHarvester.cs
@@ -14,7 +14,7 @@ namespace WixToolset.Harvesters
     /// <summary>
     /// Harvest WiX authoring for a reg file.
     /// </summary>
-    public class RegFileHarvester : BaseHarvesterExtension
+    public sealed class RegFileHarvester : BaseHarvesterExtension
     {
         private static readonly string ComponentPrefix = "cmp";