diff --git a/docs/en/Tutorials/Part-6.md b/docs/en/Tutorials/Part-6.md
index e62bf03391..ec8815cc29 100644
--- a/docs/en/Tutorials/Part-6.md
+++ b/docs/en/Tutorials/Part-6.md
@@ -166,7 +166,7 @@ namespace Acme.BookStore.Authors
         {
             Check.NotNullOrWhiteSpace(name, nameof(name));
 
-            var existingAuthor = _authorRepository.FindByNameAsync(name);
+            var existingAuthor = await _authorRepository.FindByNameAsync(name);
             if (existingAuthor != null)
             {
                 throw new AuthorAlreadyExistsException(name);