diff --git a/modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api_test.mustache b/modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api_test.mustache
index 32eb2b769f31..f69bf0bceef5 100644
--- a/modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api_test.mustache
+++ b/modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api_test.mustache
@@ -42,7 +42,12 @@ namespace {{packageName}}.Test.{{apiPackage}}
             {{#dataType}}
             var response = await _instance.{{operationId}}Async({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}});
             var model = response.{{vendorExtensions.x-http-status}}();
+            {{#isModel}}
+            Assert.IsType<{{packageName}}.{{modelPackage}}.{{{.}}}>(model);
+            {{/isModel}}
+            {{^isModel}}
             Assert.IsType<{{{.}}}>(model);
+            {{/isModel}}
             {{/dataType}}
             {{^dataType}}
             await _instance.{{operationId}}Async({{#allParams}}{{paramName}}{{^-last}}, {{/-last}}{{/allParams}});