diff --git a/krebs/3modules/per-user.nix b/krebs/3modules/per-user.nix
index a7a07a8e6..5beb859aa 100644
--- a/krebs/3modules/per-user.nix
+++ b/krebs/3modules/per-user.nix
@@ -13,7 +13,7 @@ in {
     });
     default = {};
   };
-  config = {
+  config = mkIf (cfg != {}) {
     environment = {
       etc =
         mapAttrs'