diff --git a/nixos/modules/virtualisation/containers.nix b/nixos/modules/virtualisation/containers.nix
index f5f8a16282d4..c3639f660dfe 100644
--- a/nixos/modules/virtualisation/containers.nix
+++ b/nixos/modules/virtualisation/containers.nix
@@ -118,9 +118,9 @@ in
     };
 
     virtualisation.containers.storage.settings.storage = {
-      driver = "overlay";
-      graphroot = "/var/lib/containers/storage";
-      runroot = "/run/containers/storage";
+      driver = lib.mkDefault "overlay";
+      graphroot = lib.mkDefault "/var/lib/containers/storage";
+      runroot = lib.mkDefault "/run/containers/storage";
     };
 
     environment.etc = {