diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9864bbf..5ca9444 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,3 +28,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Update README with example configuration and instructions for local installation
 
+## [1.0.22] - 2019-03-28
+### Changed
+- Change the default value of subdomain to `unset` to have a well-formed URL.
diff --git a/package.json b/package.json
index 3ce38d4..b9a5101 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "moco-browser-extensions",
   "description": "Browser plugin for MOCO",
-  "version": "1.0.21",
+  "version": "1.0.22",
   "license": "MIT",
   "scripts": {
     "start": "yarn start:chrome",
diff --git a/src/js/utils/browser.js b/src/js/utils/browser.js
index 37de4cb..753bb08 100644
--- a/src/js/utils/browser.js
+++ b/src/js/utils/browser.js
@@ -2,6 +2,8 @@ import { head } from "lodash/fp"
 export const isChrome = () => typeof browser === "undefined" && chrome
 export const isFirefox = () => typeof browser !== "undefined" && chrome
 
+const DEFAULT_SUBDOMAIN = "unset"
+
 export const getSettings = (withDefaultSubdomain = true) => {
   const keys = ["subdomain", "apiKey"]
   const { version } = chrome.runtime.getManifest()
@@ -9,7 +11,7 @@ export const getSettings = (withDefaultSubdomain = true) => {
     return new Promise(resolve => {
       chrome.storage.sync.get(keys, data => {
         if (withDefaultSubdomain) {
-          data.subdomain = data.subdomain || "__unset__"
+          data.subdomain = data.subdomain || DEFAULT_SUBDOMAIN
         }
         resolve({ ...data, version })
       })
@@ -17,7 +19,7 @@ export const getSettings = (withDefaultSubdomain = true) => {
   } else {
     return browser.storage.sync.get(keys).then(data => {
       if (withDefaultSubdomain) {
-        data.subdomain = data.subdomain || "__unset__"
+        data.subdomain = data.subdomain || DEFAULT_SUBDOMAIN
       }
       return { ...data, version }
     })