diff --git a/nixos/default.nix b/nixos/default.nix
index 3aa2673..b94699d 100644
--- a/nixos/default.nix
+++ b/nixos/default.nix
@@ -40,6 +40,7 @@
 
   # System-wide locale
   i18n.defaultLocale = "en_US.UTF-8";
+  i18n.supportedLocales = [ "de_DE.UTF-8/UTF-8" "en_US.UTF-8/UTF-8" ];
   time.timeZone = "Europe/Berlin";
 
   # Networking basics