diff --git a/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/cdnwebapplicationfirewall.json b/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/cdnwebapplicationfirewall.json
index b59cca749da8..b9aa26636c46 100644
--- a/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/cdnwebapplicationfirewall.json
+++ b/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/cdnwebapplicationfirewall.json
@@ -759,7 +759,7 @@
           "type": "string"
         },
         "rules": {
-          "description": "List of rules that will be disabled. If none specified, all rules in the group will be disabled.",
+          "description": "List of rules that will be enabled. If none specified, all rules in the group will be disabled.",
           "type": "array",
           "items": {
             "$ref": "#/definitions/ManagedRuleOverride"