diff --git a/nixos/modules/virtualisation/amazon-grow-partition.nix b/nixos/modules/virtualisation/amazon-grow-partition.nix
index aa13cea2a940..69b80d900bad 100644
--- a/nixos/modules/virtualisation/amazon-grow-partition.nix
+++ b/nixos/modules/virtualisation/amazon-grow-partition.nix
@@ -5,7 +5,7 @@
 { config, lib, pkgs, ... }:
 
 {
-  config = mkIf config.ec2.hvm {
+  config = lib.mkIf config.ec2.hvm {
     boot.initrd.extraUtilsCommands = ''
       copy_bin_and_libs ${pkgs.gawk}/bin/gawk
       copy_bin_and_libs ${pkgs.gnused}/bin/sed