2 files changed, 2 insertions, 2 deletions

diff --git a/src/WixToolset.Extensibility/Services/IBurnBackendHelper.cs b/src/WixToolset.Extensibility/Services/IBurnBackendHelper.cs
index 7e8d7e3e..ef5fcc65 100644
--- a/src/WixToolset.Extensibility/Services/IBurnBackendHelper.cs
+++ b/src/WixToolset.Extensibility/Services/IBurnBackendHelper.cs
@@ -7,7 +7,7 @@ namespace WixToolset.Extensibility.Services
     /// <summary>
     /// Interface provided to help Burn backend extensions.
     /// </summary>
-    public interface IBurnBackendHelper
+    public interface IBurnBackendHelper : IBackendHelper
     {
         /// <summary>
         /// Adds the given XML to the BootstrapperApplicationData manifest.
diff --git a/src/WixToolset.Extensibility/Services/IWindowsInstallerBackendHelper.cs b/src/WixToolset.Extensibility/Services/IWindowsInstallerBackendHelper.cs
index ca53ab4a..23e046fa 100644
--- a/src/WixToolset.Extensibility/Services/IWindowsInstallerBackendHelper.cs
+++ b/src/WixToolset.Extensibility/Services/IWindowsInstallerBackendHelper.cs
@@ -8,7 +8,7 @@ namespace WixToolset.Extensibility.Services
     /// <summary>
     /// Interface provided to help Windows Installer backend extensions.
     /// </summary>
-    public interface IWindowsInstallerBackendHelper
+    public interface IWindowsInstallerBackendHelper : IBackendHelper
     {
         /// <summary>
         /// Creates a <see cref="Row"/> in the specified table.