diff --git a/README.md b/README.md
index 9e9882c..3b08a04 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ Recipe to build [`gaomd/ikev2-vpn-server`](https://registry.hub.docker.com/u/gao
 
     docker run -d --name ikev2-vpn-server --restart=always --privileged -p 500:500/udp -p 4500:4500/udp gaomd/ikev2-vpn-server:0.3.0
 
-### 2. Generate the .mobileconfig (for iOS / OS X)
+### 2. Generate the .mobileconfig (for iOS / macOS)
 
     docker run -i -t --rm --volumes-from ikev2-vpn-server -e "HOST=vpn1.example.com" gaomd/ikev2-vpn-server:0.3.0 generate-mobileconfig > ikev2-vpn.mobileconfig
 
@@ -16,11 +16,11 @@ Recipe to build [`gaomd/ikev2-vpn-server`](https://registry.hub.docker.com/u/gao
 
 Transfer the generated `ikev2-vpn.mobileconfig` file to your local computer via SSH tunnel (`scp`) or any other secure methods.
 
-### 3. Install the .mobileconfig (for iOS / OS X)
+### 3. Install the .mobileconfig (for iOS / macOS)
 
 - **iOS 9 or later**: AirDrop the `.mobileconfig` file to your iOS 9 device, finish the **Install Profile** screen;
 
-- **OS X 10.11 El Capitan or later**: Double click the `.mobileconfig` file to start the *profile installation* wizard.
+- **macOS 10.11 El Capitan or later**: Double click the `.mobileconfig` file to start the *profile installation* wizard.
 
 ## Technical Details
 
@@ -32,6 +32,6 @@ Copyright (c) 2016 Mengdi Gao, This software is licensed under the [MIT License]
 
 ---
 
-\* IKEv2 protocol requires iOS 8 or later, macOS X 10.11 El Capitan or later.
+\* IKEv2 protocol requires iOS 8 or later, macOS 10.11 El Capitan or later.
 
 \* Install for **iOS 8 or later** or when your AirDrop fails: Send an E-mail to your iOS device with the `.mobileconfig` file as attachment, then tap the attachment to bring up and finish the **Install Profile** screen.