diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2019-02-01/azureFirewall.json b/specification/network/resource-manager/Microsoft.Network/stable/2019-02-01/azureFirewall.json
index 1e80dc67b77f..7278a0c0e5ad 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2019-02-01/azureFirewall.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2019-02-01/azureFirewall.json
@@ -731,8 +731,7 @@
          "description":"The action type of a rule collection",
          "enum":[
             "Allow",
-            "Deny",
-            "Alert"
+            "Deny"
          ],
          "x-ms-enum":{
             "name":"AzureFirewallRCActionType",