diff --git a/Example3-IValidateOptions/src/Example3Api/Attributes/ConfigurationSectionNameAttribute.cs b/Example3-IValidateOptions/src/Example3Api/Attributes/ConfigurationSectionNameAttribute.cs
index 9eb4725..04008f3 100644
--- a/Example3-IValidateOptions/src/Example3Api/Attributes/ConfigurationSectionNameAttribute.cs
+++ b/Example3-IValidateOptions/src/Example3Api/Attributes/ConfigurationSectionNameAttribute.cs
@@ -2,6 +2,8 @@
 
 namespace Example3Api.Attributes
 {
+    /// <summary>Used when the section name in the configuration file does not match the
+    /// class name of the options/configuration object.</summary>
     [AttributeUsage(AttributeTargets.Class)]
     public class ConfigurationSectionNameAttribute : Attribute
     {