diff --git a/flake.nix b/flake.nix
index f109f48..b6c1a21 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,6 +22,7 @@
 
     nixosModules.linux = { ... }: {
       imports = [
+        ./system/linux/i18n.nix
         ./system/linux/system.nix
       ];
     };
diff --git a/system/linux/i18n.nix b/system/linux/i18n.nix
new file mode 100644
index 0000000..370fee6
--- /dev/null
+++ b/system/linux/i18n.nix
@@ -0,0 +1,17 @@
+{ ... }:
+{
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_US.UTF-8";
+
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "en_US.UTF-8";
+    LC_IDENTIFICATION = "en_US.UTF-8";
+    LC_MEASUREMENT = "en_US.UTF-8";
+    LC_MONETARY = "en_US.UTF-8";
+    LC_NAME = "en_US.UTF-8";
+    LC_NUMERIC = "en_US.UTF-8";
+    LC_PAPER = "en_US.UTF-8";
+    LC_TELEPHONE = "en_US.UTF-8";
+    LC_TIME = "en_US.UTF-8";
+  };
+}