1 files changed, 18 insertions, 3 deletions

diff --git a/src/WixToolset.Core.WindowsInstaller/Bind/LoadTableDefinitionsCommand.cs b/src/WixToolset.Core.WindowsInstaller/Bind/LoadTableDefinitionsCommand.cs
index 92ddad6f..1aa4065e 100644
--- a/src/WixToolset.Core.WindowsInstaller/Bind/LoadTableDefinitionsCommand.cs
+++ b/src/WixToolset.Core.WindowsInstaller/Bind/LoadTableDefinitionsCommand.cs
@@ -9,15 +9,22 @@ namespace WixToolset.Core.WindowsInstaller.Bind
     using WixToolset.Data;
     using WixToolset.Data.Tuples;
     using WixToolset.Data.WindowsInstaller;
+    using WixToolset.Extensibility;
 
     internal class LoadTableDefinitionsCommand
     {
-        public LoadTableDefinitionsCommand(IntermediateSection section) => this.Section = section;
-
-        public TableDefinitionCollection TableDefinitions { get; private set; }
+        public LoadTableDefinitionsCommand(IntermediateSection section, IEnumerable<IWindowsInstallerBackendBinderExtension> backendExtensions)
+        {
+            this.Section = section;
+            this.BackendExtensions = backendExtensions;
+        }
 
         private IntermediateSection Section { get; }
 
+        private IEnumerable<IWindowsInstallerBackendBinderExtension> BackendExtensions { get; }
+
+        public TableDefinitionCollection TableDefinitions { get; private set; }
+
         public TableDefinitionCollection Execute()
         {
             var tableDefinitions = new TableDefinitionCollection(WindowsInstallerStandardInternal.GetTableDefinitions());
@@ -28,6 +35,14 @@ namespace WixToolset.Core.WindowsInstaller.Bind
                 tableDefinitions.Add(customTableDefinition);
             }
 
+            foreach (var backendExtension in this.BackendExtensions)
+            {
+                foreach (var tableDefinition in backendExtension.TableDefinitions)
+                {
+                    tableDefinitions.Add(tableDefinition);
+                }
+            }
+
             this.TableDefinitions = tableDefinitions;
             return this.TableDefinitions;
         }