diff --git a/modules/nixos/nix/default.nix b/modules/nixos/nix/default.nix
index 10d0902..f767353 100644
--- a/modules/nixos/nix/default.nix
+++ b/modules/nixos/nix/default.nix
@@ -83,8 +83,8 @@ in
 
         gc = {
           automatic = true;
-          dates = "weekly";
-          options = "--delete-older-than 30d";
+          dates = lib.mkDefault "weekly";
+          options = lib.mkDefault "--delete-older-than 14d";
         };
 
         # flake-utils-plus
diff --git a/systems/x86_64-linux/mx/default.nix b/systems/x86_64-linux/mx/default.nix
index 19eb9b8..3388e42 100644
--- a/systems/x86_64-linux/mx/default.nix
+++ b/systems/x86_64-linux/mx/default.nix
@@ -35,6 +35,12 @@
     flake = lib.mkForce "git+file:///var/lib/gitea/repositories/harald/nixcfg.git#mx";
   };
 
+  gc = {
+    automatic = true;
+    dates = lib.mkDefault "daily";
+    options = lib.mkDefault "--delete-older-than 7d";
+  };
+
   programs.git.config.safe.directory = "/var/lib/gitea/repositories/harald/nixcfg.git";
 
   environment.systemPackages = with pkgs; [