diff --git a/modules/system/boot/stage-1.nix b/modules/system/boot/stage-1.nix
index feb4b583839..6f82f3285b9 100644
--- a/modules/system/boot/stage-1.nix
+++ b/modules/system/boot/stage-1.nix
@@ -292,7 +292,8 @@ let
   busyboxKeymap = pkgs.runCommand "boottime-keymap"
     { preferLocalBuild = true; }
     ''
-      ${pkgs.kbd}/bin/loadkeys -qb "${config.i18n.consoleKeyMap}" > $out
+      ${pkgs.kbd}/bin/loadkeys -qb "${config.i18n.consoleKeyMap}" > $out ||
+        ${pkgs.kbd}/bin/loadkeys -qbu "${config.i18n.consoleKeyMap}" > $out
     '';