diff --git a/configuration.nix b/configuration.nix
index a7c7ad8..02151a0 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -35,18 +35,6 @@
   # 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";
-  };
-
   # Enable the X11 windowing system.
   services.xserver.enable = true;