diff --git a/net/gce.sh b/net/gce.sh
index 39d46cd975..649b4ccb3e 100755
--- a/net/gce.sh
+++ b/net/gce.sh
@@ -78,7 +78,7 @@ Manage testnet instances
    -d [disk-type]   - Specify a boot disk type (default None) Use pd-ssd to get ssd on GCE.
 
  config-specific options:
-   none
+   -P               - Use public network IP addresses (default: $publicNetwork)
 
  delete-specific options:
    none