diff --git a/lib/common.js b/lib/common.js
index 362f4af..7c6c5e9 100755
--- a/lib/common.js
+++ b/lib/common.js
@@ -173,6 +173,21 @@ function humanDurationFromMs(ms) {
     return bits.slice(0, 2).join('');
 }
 
+/**
+ * Adapted from <http://stackoverflow.com/a/18650828>
+ */
+function humanSizeFromBytes(bytes) {
+    assert.number(bytes, 'bytes');
+    var sizes = ['B', 'KiB', 'MiB', 'GiB', 'TiB'];
+    if (bytes === 0) {
+        return '0 B';
+    }
+    var i = Number(Math.floor(Math.log(bytes) / Math.log(1024)));
+    var s = String(bytes / Math.pow(1024, i));
+    var precision1 = (s.indexOf('.') === -1
+        ? s + '.0' : s.slice(0, s.indexOf('.') + 2));
+    return format('%s %s', precision1, sizes[i]);
+}
 
 
 //---- exports
@@ -187,6 +202,7 @@ module.exports = {
     kvToObj: kvToObj,
     longAgo: longAgo,
     isUUID: isUUID,
-    humanDurationFromMs: humanDurationFromMs
+    humanDurationFromMs: humanDurationFromMs,
+    humanSizeFromBytes: humanSizeFromBytes
 };
 // vim: set softtabstop=4 shiftwidth=4:
diff --git a/lib/do_info.js b/lib/do_info.js
index 94dadd6..7089806 100644
--- a/lib/do_info.js
+++ b/lib/do_info.js
@@ -4,10 +4,10 @@
  * `triton info ...`
  */
 
+var assert = require('assert-plus');
 var common = require('./common');
-var f = require('util').format;
+var format = require('util').format;
 
-var prettybytes = require('pretty-bytes');
 
 function do_info(subcmd, opts, args, callback) {
     var self = this;
@@ -62,8 +62,10 @@ function do_info(subcmd, opts, args, callback) {
             Object.keys(states).forEach(function (state) {
                 console.log('- %d %s', states[state], state);
             });
-            console.log('- %s RAM Total', prettybytes(memory * 1000 * 1000));
-            console.log('- %s Disk Total', prettybytes(disk * 1000 * 1000));
+            console.log('- %s RAM Total',
+                common.humanSizeFromBytes(memory * 1000 * 1000));
+            console.log('- %s Disk Total',
+                common.humanSizeFromBytes(disk * 1000 * 1000));
         }
         callback();
     }