diff --git a/pb/pcm-openstack.proto b/pb/pcm-openstack.proto
index 1b73888..a5311b5 100644
--- a/pb/pcm-openstack.proto
+++ b/pb/pcm-openstack.proto
@@ -255,7 +255,7 @@ message CreateServerReq {
     string accessIPv4 = 4;
     string accessIPv6 = 5;
     string adminPass = 6;
-    string availability_zone = 7;
+    string availability_zone = 7;// @gotags: copier:"AvailabilityZone"
     repeated Block_device_mapping_v2 block_device_mapping_v2 = 8; // @gotags: copier:"BlockDeviceMappingV2"
     bool config_drive = 9;
     string key_name = 11;