diff --git a/app/helpers/settings_helper.rb b/app/helpers/settings_helper.rb
index 39eb4180ef3f9462331ef0223f2a0bc83211a436..10aaf3acaa5ac1f7132af470bdcf3f5e9b5ab71f 100644
--- a/app/helpers/settings_helper.rb
+++ b/app/helpers/settings_helper.rb
@@ -32,6 +32,7 @@ module SettingsHelper
     hy: 'Õ€Õ¡ÕµÕ¥Ö€Õ¥Õ¶',
     id: 'Bahasa Indonesia',
     io: 'Ido',
+    is: 'Íslenska',
     it: 'Italiano',
     ja: '日本語',
     ka: 'ქართული',
diff --git a/config/application.rb b/config/application.rb
index 58e59fd51b054ee57847f4dc59092bd0ac5952a8..c1bc18a3033d63ad947cbfe1c56c30bb25626307 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -70,6 +70,7 @@ module Mastodon
       :hy,
       :id,
       :io,
+      :is,
       :it,
       :ja,
       :ka,