diff --git a/hosts/lemp11/configuration.nix b/hosts/lemp11/configuration.nix
index a3c40dbd..124cf9d2 100644
--- a/hosts/lemp11/configuration.nix
+++ b/hosts/lemp11/configuration.nix
@@ -31,9 +31,9 @@
     };
   };
 
-  systemd.extraConfig = ''
-    DefaultTimeoutStopSec=10s
-  '';
+  systemd.settings.Manager = {
+    DefaultTimeoutStopSec="10s";
+  };
 
   networking.networkmanager.enable = true;
 
diff --git a/hosts/t480/configuration.nix b/hosts/t480/configuration.nix
index 60c191f2..6609ecc7 100644
--- a/hosts/t480/configuration.nix
+++ b/hosts/t480/configuration.nix
@@ -39,9 +39,9 @@
     };
   };
 
-  systemd.extraConfig = ''
-    DefaultTimeoutStopSec=10s
-  '';
+  systemd.settings.Manager = {
+    DefaultTimeoutStopSec = "10s";
+  };
 
   networking.networkmanager.enable = true;
 
diff --git a/hosts/t490/configuration.nix b/hosts/t490/configuration.nix
index 5da6d5f9..7f96406d 100644
--- a/hosts/t490/configuration.nix
+++ b/hosts/t490/configuration.nix
@@ -26,9 +26,9 @@
     };
   };
 
-  systemd.extraConfig = ''
-    DefaultTimeoutStopSec=10s
-  '';
+  systemd.settings.Manager = {
+    DefaultTimeoutStopSec = "10s";
+  };
 
   networking.networkmanager.enable = true;
 }