diff --git a/nixos/modules/profiles/installation-device.nix b/nixos/modules/profiles/installation-device.nix
index f1e73308057..a41d17e5182 100644
--- a/nixos/modules/profiles/installation-device.nix
+++ b/nixos/modules/profiles/installation-device.nix
@@ -26,10 +26,6 @@ with lib;
     # Disable some other stuff we don't need.
     security.sudo.enable = false;
 
-    # Include only the en_US locale.  This saves 75 MiB or so compared to
-    # the full glibcLocales package.
-    i18n.supportedLocales = ["en_US.UTF-8/UTF-8" "en_US/ISO-8859-1"];
-
     # Automatically log in at the virtual consoles.
     services.mingetty.autologinUser = "root";