diff --git a/src/azure-cli/azure/cli/command_modules/cdn/aaz/latest/afd/endpoint/_purge.py b/src/azure-cli/azure/cli/command_modules/cdn/aaz/latest/afd/endpoint/_purge.py
index 785461035db..366f0b4fc2b 100644
--- a/src/azure-cli/azure/cli/command_modules/cdn/aaz/latest/afd/endpoint/_purge.py
+++ b/src/azure-cli/azure/cli/command_modules/cdn/aaz/latest/afd/endpoint/_purge.py
@@ -73,7 +73,7 @@ def _build_arguments_schema(cls, *args, **kwargs):
         _args_schema.domains = AAZListArg(
             options=["--domains"],
             arg_group="Contents",
-            help="List of domains. Example: \"www.contoso.com, www.contoso1.com\"",
+            help="List of domains. Example: \"[www.contoso.com,www.contoso1.com]\"",
         )
 
         content_paths = cls._args_schema.content_paths