diff --git a/cmd/scw/testdata/test-all-usage-instance-user-data-usage.golden b/cmd/scw/testdata/test-all-usage-instance-user-data-usage.golden
index 692d9b5ebf..0b51604804 100644
--- a/cmd/scw/testdata/test-all-usage-instance-user-data-usage.golden
+++ b/cmd/scw/testdata/test-all-usage-instance-user-data-usage.golden
@@ -9,7 +9,7 @@ There are two ways of accessing user data:
  - **From within a running Instance**, by requesting the Metadata API at http://169.254.42.42/user_data (or http://[fd00:42::42]/user_data using IPv6).
    The `scaleway-ecosystem` package, installed by default on all OS images provided by Scaleway, ships with the `scw-userdata` helper command that allows you to easily query the user data from the instance.
    For security reasons, viewing and editing user data is only allowed to queries originating from a port below 1024 (by default, only the super-user can bind to ports below 1024).
-   To specify the source port with cURL, use the `--local-port` option (e.g. `curl --local-port 1-1024 http://169.254.42.42/user_data`).
+   To specify the source port with cURL, use the `--local-port` option (e.g. `curl --local-port 1-1023 http://169.254.42.42/user_data`).
  - **From the Instance API** by using the methods described below.
 
 USAGE:
diff --git a/docs/commands/instance.md b/docs/commands/instance.md
index acb442f157..7b9701979c 100644
--- a/docs/commands/instance.md
+++ b/docs/commands/instance.md
@@ -2765,7 +2765,7 @@ There are two ways of accessing user data:
  - **From within a running Instance**, by requesting the Metadata API at http://169.254.42.42/user_data (or http://[fd00:42::42]/user_data using IPv6).
    The `scaleway-ecosystem` package, installed by default on all OS images provided by Scaleway, ships with the `scw-userdata` helper command that allows you to easily query the user data from the instance.
    For security reasons, viewing and editing user data is only allowed to queries originating from a port below 1024 (by default, only the super-user can bind to ports below 1024).
-   To specify the source port with cURL, use the `--local-port` option (e.g. `curl --local-port 1-1024 http://169.254.42.42/user_data`).
+   To specify the source port with cURL, use the `--local-port` option (e.g. `curl --local-port 1-1023 http://169.254.42.42/user_data`).
  - **From the Instance API** by using the methods described below.
 
 
diff --git a/internal/namespaces/instance/v1/instance_cli.go b/internal/namespaces/instance/v1/instance_cli.go
index a64983e630..e632eb6bf3 100644
--- a/internal/namespaces/instance/v1/instance_cli.go
+++ b/internal/namespaces/instance/v1/instance_cli.go
@@ -223,7 +223,7 @@ There are two ways of accessing user data:
  - **From within a running Instance**, by requesting the Metadata API at http://169.254.42.42/user_data (or http://[fd00:42::42]/user_data using IPv6).
    The ` + "`" + `scaleway-ecosystem` + "`" + ` package, installed by default on all OS images provided by Scaleway, ships with the ` + "`" + `scw-userdata` + "`" + ` helper command that allows you to easily query the user data from the instance.
    For security reasons, viewing and editing user data is only allowed to queries originating from a port below 1024 (by default, only the super-user can bind to ports below 1024).
-   To specify the source port with cURL, use the ` + "`" + `--local-port` + "`" + ` option (e.g. ` + "`" + `curl --local-port 1-1024 http://169.254.42.42/user_data` + "`" + `).
+   To specify the source port with cURL, use the ` + "`" + `--local-port` + "`" + ` option (e.g. ` + "`" + `curl --local-port 1-1023 http://169.254.42.42/user_data` + "`" + `).
  - **From the Instance API** by using the methods described below.`,
 		Namespace: "instance",
 		Resource:  "user-data",