2 files changed, 4 insertions, 1 deletions

diff --git a/src/WixToolset.Extensibility/IResolverExtension.cs b/src/WixToolset.Extensibility/IResolverExtension.cs
index c414b19e..500b7165 100644
--- a/src/WixToolset.Extensibility/IResolverExtension.cs
+++ b/src/WixToolset.Extensibility/IResolverExtension.cs
@@ -15,6 +15,9 @@ namespace WixToolset.Extensibility
         /// </summary>
         void PreResolve(IResolveContext context);
 
+        /// <summary>
+        /// Called to attempt to resolve source to a file.
+        /// </summary>
         IResolveFileResult ResolveFile(string source, IntermediateTupleDefinition tupleDefinition, SourceLineNumber sourceLineNumbers, BindStage bindStage);
 
         /// <summary>
diff --git a/src/WixToolset.Extensibility/Services/IBackendHelper.cs b/src/WixToolset.Extensibility/Services/IBackendHelper.cs
index 756d0a97..26023674 100644
--- a/src/WixToolset.Extensibility/Services/IBackendHelper.cs
+++ b/src/WixToolset.Extensibility/Services/IBackendHelper.cs
@@ -15,7 +15,7 @@ namespace WixToolset.Extensibility.Services
         /// Creates a file transfer and marks it redundant if the source and destination are identical.
         /// </summary>
         /// <param name="source">Source for the file transfer.</param>
-        /// <param name="destination">Destiation for the file transfer.</param>
+        /// <param name="destination">Destination for the file transfer.</param>
         /// <param name="move">Indicates whether to move or copy the source file.</param>
         IFileTransfer CreateFileTransfer(string source, string destination, bool move, SourceLineNumber sourceLineNumbers = null);