diff --git a/src/azure-cli/azure/cli/command_modules/acs/_params.py b/src/azure-cli/azure/cli/command_modules/acs/_params.py
index 32f024e0e29..2933c4307b5 100644
--- a/src/azure-cli/azure/cli/command_modules/acs/_params.py
+++ b/src/azure-cli/azure/cli/command_modules/acs/_params.py
@@ -188,7 +188,7 @@ def load_arguments(self, _):
         c.argument('enable_rbac', action='store_true', options_list=['--enable-rbac', '-r'],
                    deprecate_info=c.deprecate(redirect="--disable-rbac", hide="2.0.45"))
         c.argument('max_pods', type=int, options_list=['--max-pods', '-m'], validator=validate_max_pods)
-        c.argument('network_plugin')
+        c.argument('network_plugin', arg_type=get_enum_type(['azure', 'kubenet']))
         c.argument('network_policy')
         c.argument('no_ssh_key', options_list=['--no-ssh-key', '-x'])
         c.argument('pod_cidr')