diff --git a/modules/core/sddm.nix b/modules/core/sddm.nix
index 753945d..a71dd86 100644
--- a/modules/core/sddm.nix
+++ b/modules/core/sddm.nix
@@ -18,6 +18,8 @@ in
     };
 
     # To prevent getting stuck at shutdown
-    systemd.extraConfig = "DefaultTimeoutStopSec=10s";
+    systemd.settings.Manager = {
+      DefaultTimeoutStopSec = "10s";
+    };
   };
 }
\ No newline at end of file