diff --git a/samples/client/petstore/csharp/SwaggerClientTest/TestApiClient.cs b/samples/client/petstore/csharp/SwaggerClientTest/TestApiClient.cs
index af7c22ba088..9d1921d8ea7 100644
--- a/samples/client/petstore/csharp/SwaggerClientTest/TestApiClient.cs
+++ b/samples/client/petstore/csharp/SwaggerClientTest/TestApiClient.cs
@@ -123,7 +123,7 @@ namespace SwaggerClientTest.TestApiClient
 			PetApi p3 = new PetApi (c1);
 
 			ApiClient a1 = new ApiClient();
-			Configuration c2 = new Configuration (a1); // using default ApiClient
+			Configuration c2 = new Configuration (a1); // using "a1" as the ApiClient
 			PetApi p4 = new PetApi (c2);
 
 
@@ -131,9 +131,11 @@ namespace SwaggerClientTest.TestApiClient
 			Assert.AreSame(p1.Configuration.ApiClient, p2.Configuration.ApiClient);
 			Assert.AreSame(p1.Configuration.ApiClient, Configuration.Default.ApiClient);
 
+			// ensure both using the same default ApiClient
 			Assert.AreSame(p3.Configuration.ApiClient, c1.ApiClient);
 			Assert.AreSame(p3.Configuration.ApiClient, Configuration.Default.ApiClient);
 
+			// ensure it's not using the default ApiClient
 			Assert.AreSame(p4.Configuration.ApiClient, c2.ApiClient);
 			Assert.AreNotSame(p4.Configuration.ApiClient, Configuration.Default.ApiClient);
 
diff --git a/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/SwaggerClientTest.dll.mdb b/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/SwaggerClientTest.dll.mdb
index 5008263b223..9fd5b3c6f76 100644
Binary files a/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/SwaggerClientTest.dll.mdb and b/samples/client/petstore/csharp/SwaggerClientTest/bin/Debug/SwaggerClientTest.dll.mdb differ