diff --git a/swift-secure-enclave-tool-v2.swift b/swift-secure-enclave-tool-v2.swift
index df3744f..199563c 100644
--- a/swift-secure-enclave-tool-v2.swift
+++ b/swift-secure-enclave-tool-v2.swift
@@ -311,8 +311,8 @@ if (command == "help") {
     print("help                                               - print help")
     print("version                                            - print version")
     print("is_support_secure_enclave                          - is Secure Enclave supported")
-    print("generate_p256_ecsign_keypair [controlFlag]         - generate Secure Enclave P256 EC sign key pair")
-    print("generate_p256_ecdh_keypair [controlFlag]           - generate Secure Enclave P256 EC DH key pair")
+    print("generate_p256_ecsign_keypair <controlFlag>         - generate Secure Enclave P256 EC sign key pair")
+    print("generate_p256_ecdh_keypair <controlFlag>           - generate Secure Enclave P256 EC DH key pair")
     print("recover_p256_ecsign_public_key <privateKey>        - recover Secure Enclave P256 EC sign key pair")
     print("recover_p256_ecdh_public_key <privateKey>          - recover Secure Enclave P256 EC DH key pair")
     print("compute_p256_ecsign <privateKey> <content>         - compure Secure Enclave P256 EC sign")