diff --git a/README.md b/README.md
index a3f9e8d..66297ef 100644
--- a/README.md
+++ b/README.md
@@ -80,4 +80,15 @@ System                        0                4
 smss.exe                      4                228
 ```
 
+### Mac/Darwin
+
+1. " " need to be striped
+
+```shell
+$ ps -A -o comm,ppid,pid,stat
+COMM              PPID   PID STAT
+/sbin/launchd        0     1 Ss
+/usr/libexec/Use     1    43 Ss
+```
+
 ### LICENSE: MIT
diff --git a/bin/ps-tree.js b/bin/ps-tree.js
old mode 100644
new mode 100755
diff --git a/index.js b/index.js
old mode 100755
new mode 100644
index 24e3284..6fe23cd
--- a/index.js
+++ b/index.js
@@ -28,6 +28,12 @@ module.exports = function childrenOfPid(pid, callback) {
   // ps              20688 16965 R+
   // ```
   //
+  // Darwin:
+  // $ ps -A -o comm,ppid,pid,stat
+  // COMM              PPID   PID STAT
+  // /sbin/launchd        0     1 Ss
+  // /usr/libexec/Use     1    43 Ss
+  //
   // Win32:
   // 1. wmic PROCESS WHERE ParentProcessId=4604 GET Name,ParentProcessId,ProcessId,Status)
   // 2. The order of head columns is fixed
@@ -95,12 +101,9 @@ module.exports = function childrenOfPid(pid, callback) {
  * @param {string} str Header string to normalize
  */
 function normalizeHeader(str) {
-  if (process.platform !== 'win32') {
-    return str;
-  }
-
   switch (str) {
-    case 'Name':
+    case 'Name':  // for win32
+    case 'COMM':  // for darwin
       return 'COMMAND';
       break;
     case 'ParentProcessId':
@@ -113,6 +116,6 @@ function normalizeHeader(str) {
       return 'STAT';
       break;
     default:
-      throw new Error('Unknown process listing header: ' + str);
+      return str
   }
 }