diff --git a/nixos/modules/services/networking/ssh/lshd.nix b/nixos/modules/services/networking/ssh/lshd.nix
index fca30a1fe49c..81e523fd2a51 100644
--- a/nixos/modules/services/networking/ssh/lshd.nix
+++ b/nixos/modules/services/networking/ssh/lshd.nix
@@ -99,7 +99,6 @@ in
       };
 
       subsystems = mkOption {
-        default = [ ["sftp" "${pkgs.lsh}/sbin/sftp-server"] ];
         description = ''
           List of subsystem-path pairs, where the head of the pair
           denotes the subsystem name, and the tail denotes the path to
@@ -116,6 +115,8 @@ in
 
   config = mkIf cfg.enable {
 
+    services.lshd.subsystems = [ ["sftp" "${pkgs.lsh}/sbin/sftp-server"] ];
+
     jobs.lshd =
       { description = "GNU lshd SSH2 daemon";