diff --git a/nixos/modules/installer/cd-dvd/iso-image.nix b/nixos/modules/installer/cd-dvd/iso-image.nix
index e25c96d5778..d421e3ea428 100644
--- a/nixos/modules/installer/cd-dvd/iso-image.nix
+++ b/nixos/modules/installer/cd-dvd/iso-image.nix
@@ -420,6 +420,8 @@ let
       "ia32"
     else if pkgs.stdenv.isx86_64 then
       "x64"
+    else if pkgs.stdenv.isAarch32 then
+      "arm"
     else if pkgs.stdenv.isAarch64 then
       "aa64"
     else