diff --git a/modules/services/maintenance.nix b/modules/services/maintenance.nix
index b65c43d..4000277 100644
--- a/modules/services/maintenance.nix
+++ b/modules/services/maintenance.nix
@@ -9,5 +9,7 @@
     options = "--delete-older-than 14d";
   };
 
-  services.journald.extraConfig = "SystemMaxUse=500M";
+  services.journald.settings.Journal = {
+    SystemMaxUse = "500M";
+  };
 }