diff --git a/installer.nix b/installer.nix
index 7b1be2a..cbd2ba5 100644
--- a/installer.nix
+++ b/installer.nix
@@ -25,6 +25,12 @@ nixpkgs: machine:
         programs.bash.loginShellInit = ''
           ${nixpkgs.lib.getExe bootstrap}
         '';
+
+        isoImage = {
+          compressImage = false;
+          squashfsCompression = "gzip -Xcompression-level 1";
+          isoName = lib.mkForce "installer.iso";
+        };
       };
   in
   (nixpkgs.lib.nixosSystem { modules =  [installer];}).config.system.build.isoImage