diff --git a/samples/client/petstore/csharp/SwaggerClientTest/TestPet.cs b/samples/client/petstore/csharp/SwaggerClientTest/TestPet.cs
index 84c8d408a51b..640d24250d9c 100644
--- a/samples/client/petstore/csharp/SwaggerClientTest/TestPet.cs
+++ b/samples/client/petstore/csharp/SwaggerClientTest/TestPet.cs
@@ -334,7 +334,7 @@ namespace SwaggerClientTest.TestPet
 		public void TestDefaultHeader ()
 		{
 			PetApi petApi = new PetApi ();
-			// comment out the warning test below as it's confirmed the warning is working as expecteds
+			// commented out the warning test below as it's confirmed the warning is working as expected
 			// there should be a warning for using AddDefaultHeader (deprecated) below
 			//petApi.AddDefaultHeader ("header_key", "header_value");
 			// the following should be used instead as suggested in the doc