diff --git a/README.md b/README.md
index cccdbc224e..f73321ea06 100644
--- a/README.md
+++ b/README.md
@@ -167,7 +167,7 @@ public class Startup
         ...
 
         app.UseOpenApi(); // serve OpenAPI/Swagger documents
-        app.UseSwaggerUi3(); // serve Swagger UI
+        app.UseSwaggerUi(); // serve Swagger UI
         app.UseReDoc(); // serve ReDoc UI
     }
 }
@@ -238,4 +238,4 @@ Support this project by becoming a sponsor. Your logo will show up here with a l
 Thank you to all our backers!
 
 <a href="https://opencollective.com/NSwag#backers" target="_blank"><img src="https://opencollective.com/NSwag/backers.svg?width=890"></a>
- 
+ 
\ No newline at end of file