diff --git a/package-lock.json b/package-lock.json
index fa8a2c628..5a25709c6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -45,7 +45,6 @@
         "nodemailer": "^6.7.3",
         "nodemailer-smtp-transport": "^2.7.4",
         "once": "^1.4.0",
-        "pretty-bytes": "^6.0.0",
         "progress-stream": "^2.0.0",
         "proxy-middleware": "^0.15.0",
         "qrcode": "^1.5.0",
@@ -5880,17 +5879,6 @@
         "node": ">= 0.6"
       }
     },
-    "node_modules/pretty-bytes": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/pretty-bytes/-/pretty-bytes-6.0.0.tgz",
-      "integrity": "sha512-6UqkYefdogmzqAZWzJ7laYeJnaXDy2/J+ZqiiMtS7t7OfpXWTlaeGMwX8U6EFvPV/YWWEKRkS8hKS4k60WHTOg==",
-      "engines": {
-        "node": "^14.13.1 || >=16.0.0"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/process-nextick-args": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
@@ -12525,11 +12513,6 @@
       "resolved": "https://registry.npmjs.org/precond/-/precond-0.2.3.tgz",
       "integrity": "sha1-qpWRvKokkj8eD0hJ0kD0fvwQdaw="
     },
-    "pretty-bytes": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/pretty-bytes/-/pretty-bytes-6.0.0.tgz",
-      "integrity": "sha512-6UqkYefdogmzqAZWzJ7laYeJnaXDy2/J+ZqiiMtS7t7OfpXWTlaeGMwX8U6EFvPV/YWWEKRkS8hKS4k60WHTOg=="
-    },
     "process-nextick-args": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
diff --git a/package.json b/package.json
index 25a26bc12..bcbcb3c69 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,6 @@
     "nodemailer": "^6.7.3",
     "nodemailer-smtp-transport": "^2.7.4",
     "once": "^1.4.0",
-    "pretty-bytes": "^6.0.0",
     "progress-stream": "^2.0.0",
     "proxy-middleware": "^0.15.0",
     "qrcode": "^1.5.0",
diff --git a/src/pretty-bytes.js b/src/pretty-bytes.js
new file mode 100644
index 000000000..b96e99ea0
--- /dev/null
+++ b/src/pretty-bytes.js
@@ -0,0 +1,15 @@
+'use strict';
+
+exports = module.exports = prettyByteSize;
+
+const assert = require('assert');
+
+// binary units (non SI) 1024 based
+function prettyByteSize(size) {
+    assert.strictEqual(typeof size, 'number');
+
+    if (!size) return 0;
+
+    const i = Math.floor(Math.log(size) / Math.log(1024));
+    return (size / Math.pow(1024, i)).toFixed(2) * 1 + ' ' + ['B', 'kB', 'MB', 'GB', 'TB'][i];
+}
diff --git a/src/storage/filesystem.js b/src/storage/filesystem.js
index 2244efe9f..9c3bc50d7 100644
--- a/src/storage/filesystem.js
+++ b/src/storage/filesystem.js
@@ -40,7 +40,7 @@ const assert = require('assert'),
     mounts = require('../mounts.js'),
     path = require('path'),
     paths = require('../paths.js'),
-    prettyBytes = require('pretty-bytes'),
+    prettyBytes = require('../pretty-bytes.js'),
     readdirp = require('readdirp'),
     safe = require('safetydance'),
     shell = require('../shell.js');