diff --git a/src/pretix/_base_settings.py b/src/pretix/_base_settings.py
index 276a666e01..88841b656b 100644
--- a/src/pretix/_base_settings.py
+++ b/src/pretix/_base_settings.py
@@ -89,6 +89,7 @@ ALL_LANGUAGES = [
     ('fi', _('Finnish')),
     ('gl', _('Galician')),
     ('el', _('Greek')),
+    ('id', _('Indonesian')),
     ('it', _('Italian')),
     ('lv', _('Latvian')),
     ('pl', _('Polish')),