diff --git a/app/terraform/proxy/azure_cdn.py b/app/terraform/proxy/azure_cdn.py
index 8c749c7..e016ca2 100644
--- a/app/terraform/proxy/azure_cdn.py
+++ b/app/terraform/proxy/azure_cdn.py
@@ -19,7 +19,8 @@ class ProxyAzureCdnAutomation(ProxyAutomation):
         "azure_client_id",
         "azure_client_secret",
         "azure_subscription_id",
-        "azure_tenant_id"
+        "azure_tenant_id",
+        "smart_zone"
     ]
 
     template = """