diff --git a/nixos/modules/tasks/network-interfaces-systemd.nix b/nixos/modules/tasks/network-interfaces-systemd.nix
index a1212c90556..cd599d8b894 100644
--- a/nixos/modules/tasks/network-interfaces-systemd.nix
+++ b/nixos/modules/tasks/network-interfaces-systemd.nix
@@ -62,9 +62,9 @@ in
         genericNetwork = override: {
           DHCP = override (dhcpStr cfg.useDHCP);
         } // optionalAttrs (cfg.defaultGateway != null) {
-          gateway = override [ cfg.defaultGateway ];
+          gateway = override [ cfg.defaultGateway.address ];
         } // optionalAttrs (cfg.defaultGateway6 != null) {
-          gateway = override [ cfg.defaultGateway6 ];
+          gateway = override [ cfg.defaultGateway6.address ];
         } // optionalAttrs (domains != [ ]) {
           domains = override domains;
         };