1 files changed, 1 insertions, 1 deletions

diff --git a/src/WixToolset.Core/WixVariableResolver.cs b/src/WixToolset.Core/WixVariableResolver.cs
index 8ac35e99..75851a56 100644
--- a/src/WixToolset.Core/WixVariableResolver.cs
+++ b/src/WixToolset.Core/WixVariableResolver.cs
@@ -12,7 +12,7 @@ namespace WixToolset.Core
     /// <summary>
     /// WiX variable resolver.
     /// </summary>
-    internal sealed class WixVariableResolver : IVariableResolver
+    internal class WixVariableResolver : IVariableResolver
     {
         private readonly Dictionary<string, BindVariable> locVariables;
         private readonly Dictionary<string, BindVariable> wixVariables;