diff --git a/hardkernel/odroid-hc4/default.nix b/hardkernel/odroid-hc4/default.nix
index a6442ab..aad0eb7 100644
--- a/hardkernel/odroid-hc4/default.nix
+++ b/hardkernel/odroid-hc4/default.nix
@@ -32,7 +32,7 @@
   };
 
   # Linux 5.15 sometimes crash under heavy network usage
-  systemd.watchdog.runtimeTime = lib.mkDefault "1min";
+  systemd.settings.Manager.RuntimeWatchdogSec = lib.mkDefault "1min";
 
   hardware.deviceTree.filter = "meson-sm1-odroid-hc4.dtb";
 }