diff --git a/tools/README.md b/tools/README.md
index 355d1a2..9b16b45 100644
--- a/tools/README.md
+++ b/tools/README.md
@@ -185,7 +185,7 @@ In the process of exporting the key material on a card as a certificate (public
 bound to the certificate:
 
 ```
-$ opgpcard pubkey -p <user-pin-file> --user-id "Alice Adams <alice@example.org>"
+$ opgpcard pubkey -p <user-pin-file> --userid "Alice Adams <alice@example.org>"
 ```
 
 
@@ -466,7 +466,7 @@ x3z8hDoRKAU=
 In the context of generating key material, one or more User IDs can be bound to the exported certificate:
 
 ```
-$ opgpcard admin --card ABCD:01234567 generate --user-id "Alice Adams <alice@example.org>" --output <output-cert-file> 25519
+$ opgpcard admin --card ABCD:01234567 generate --userid "Alice Adams <alice@example.org>" --output <output-cert-file> 25519
 ```
 
 
diff --git a/tools/src/bin/opgpcard/cli.rs b/tools/src/bin/opgpcard/cli.rs
index 5a5f3ee..df53ea2 100644
--- a/tools/src/bin/opgpcard/cli.rs
+++ b/tools/src/bin/opgpcard/cli.rs
@@ -56,7 +56,7 @@ pub enum Command {
         user_pin: Option<PathBuf>,
 
         /// User ID to add to the exported certificate representation
-        #[clap(name = "User ID", short = 'u', long = "user-id")]
+        #[clap(name = "User ID", short = 'u', long = "userid")]
         user_id: Vec<String>,
     },
 
@@ -181,7 +181,7 @@ pub enum AdminCommand {
         algo: Option<String>,
 
         /// User ID to add to the exported certificate representation
-        #[clap(name = "User ID", short = 'u', long = "user-id")]
+        #[clap(name = "User ID", short = 'u', long = "userid")]
         user_id: Vec<String>,
     },