diff --git a/nixos/modules/virtualisation/containers.nix b/nixos/modules/virtualisation/containers.nix
index 5e1cfcdfc6f..aa28a25be7a 100644
--- a/nixos/modules/virtualisation/containers.nix
+++ b/nixos/modules/virtualisation/containers.nix
@@ -473,7 +473,7 @@ in
             };
 
             extraVeths = mkOption {
-              type = with types; attrsOf (submodule networkOptions);
+              type = with types; attrsOf (submodule { options = networkOptions; });
               default = {};
               description = ''
                 Extra veth-pairs to be created for the container