diff --git a/modules/virtualisation/amazon-image.nix b/modules/virtualisation/amazon-image.nix
index aa0a97d3aa03..dad071cc8e9a 100644
--- a/modules/virtualisation/amazon-image.nix
+++ b/modules/virtualisation/amazon-image.nix
@@ -21,7 +21,7 @@ with pkgs.lib;
         }
         ''
           # Create an empty filesystem and mount it.
-          ${pkgs.e2fsprogs}/sbin/mkfs.ext3 -L nixos /dev/vda
+          ${pkgs.e2fsprogs}/sbin/mkfs.ext4 -L nixos /dev/vda
           ${pkgs.e2fsprogs}/sbin/tune2fs -c 0 -i 0 /dev/vda
           mkdir /mnt
           mount /dev/vda /mnt