diff --git a/client/components/common/page-selector.vue b/client/components/common/page-selector.vue
index cf66c9cae0..de3aaade0f 100644
--- a/client/components/common/page-selector.vue
+++ b/client/components/common/page-selector.vue
@@ -103,8 +103,6 @@
 import _ from 'lodash'
 import gql from 'graphql-tag'
 
-const localeSegmentRegex = /^[A-Z]{2}(-[A-Z]{2})?$/i
-
 /* global siteLangs, siteConfig */
 
 export default {
@@ -192,8 +190,6 @@ export default {
       const firstSection = _.head(this.currentPath.split('/'))
       if (firstSection.length <= 1) {
         return false
-      } else if (localeSegmentRegex.test(firstSection)) {
-        return false
       } else if (
         _.some(['login', 'logout', 'register', 'verify', 'favicons', 'fonts', 'img', 'js', 'svg'], p => {
           return p === firstSection
diff --git a/server/helpers/page.js b/server/helpers/page.js
index 8bea0aa3b2..8d5e69260e 100644
--- a/server/helpers/page.js
+++ b/server/helpers/page.js
@@ -3,8 +3,9 @@ const _ = require('lodash')
 const crypto = require('crypto')
 const path = require('path')
 
-const localeSegmentRegex = /^[A-Z]{2}(-[A-Z]{2})?$/i
-const localeFolderRegex = /^([a-z]{2}(?:-[a-z]{2})?\/)?(.*)/i
+// exclude Regex matches based on ISO 639-1 individual living languages
+const localeSegmentRegex = /^(?!a[^abfmnsv])(?!b[^ameniosrg])(?!c[^ashevoy])(?!d[^aevz])(?!e[^lnue])(?!f[^ojiry])(?!g[^dalvu])(?!h[^taezioruy])(?!i[^gsidt])(?!j[^av])(?!k[^lnsakmiyoj])(?!l[^ointbug])(?!m[^khlirty])(?!n[^avrdglnby])(?!o[^cs])(?!p[^alt])(?!r[^monu])(?!s[^giklemndotrsuv])(?!t[^yateglhionskrw])(?!u[^gkr])(?!v[^ei])(?!w[^ao])(?!x[^h])(?!y[^o])(?!z[^u])[A-Z]{2}(-[A-Z]{2})?$/i
+const localeFolderRegex = /^((?!a[^abfmnsv])(?!b[^ameniosrg])(?!c[^ashevoy])(?!d[^aevz])(?!e[^lnue])(?!f[^ojiry])(?!g[^dalvu])(?!h[^taezioruy])(?!i[^gsidt])(?!j[^av])(?!k[^lnsakmiyoj])(?!l[^ointbug])(?!m[^khlirty])(?!n[^avrdglnby])(?!o[^cs])(?!p[^alt])(?!r[^monu])(?!s[^giklemndotrsuv])(?!t[^yateglhionskrw])(?!u[^gkr])(?!v[^ei])(?!w[^ao])(?!x[^h])(?!y[^o])(?!z[^u])[a-z]{2}(?:-[a-z]{2})?\/)?(.*)/i
 // eslint-disable-next-line no-control-regex
 const unsafeCharsRegex = /[\x00-\x1f\x80-\x9f\\"|<>:*?]/