diff --git a/Test/Program.cs b/Test/Program.cs
index 512a0b8..887fdca 100644
--- a/Test/Program.cs
+++ b/Test/Program.cs
@@ -17,6 +17,8 @@ internal static class Program
         var b = config.Get("aaa.bbb", "1");
         var c = config.Get("aaa.sss", "1");
         var d = config.Get("bbb.sss", "1");
+
+        config.Delete("aaa.www");
     }
 }