diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2021-08-01/firewallPolicy.json b/specification/network/resource-manager/Microsoft.Network/stable/2021-08-01/firewallPolicy.json
index 94d0fe2613e6..4661c371ea02 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2021-08-01/firewallPolicy.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2021-08-01/firewallPolicy.json
@@ -1710,7 +1710,7 @@
           },
           "x-ms-identifiers": []
         },
-        "privateIpRanges": {
+        "privateRanges": {
           "type": "array",
           "description": "IDPS Private IP address ranges are used to identify traffic direction (i.e. inbound, outbound, etc.). By default, only ranges defined by IANA RFC 1918 are considered private IP addresses. To modify default ranges, specify your Private IP address ranges with this property",
           "items": {