diff --git a/sources/MVCFramework.Middleware.Swagger.pas b/sources/MVCFramework.Middleware.Swagger.pas
index 9bed0c2a..fc319ec0 100644
--- a/sources/MVCFramework.Middleware.Swagger.pas
+++ b/sources/MVCFramework.Middleware.Swagger.pas
@@ -340,7 +340,7 @@ begin
       SortApiPaths(LSwagDoc);
 
       LSwagDoc.GenerateSwaggerJson;
-      InternalRender(LSwagDoc.SwaggerJson.Format, AContext);
+      InternalRender(LSwagDoc.SwaggerJson.ToJSON, AContext);
       AHandled := True;
 
     finally