1 files changed, 1 insertions, 1 deletions
diff --git a/nixpkgs/nixos/modules/services/continuous-integration/buildbot/master.nix b/nixpkgs/nixos/modules/services/continuous-integration/buildbot/master.nix
index 326d2cbd82c..e3da3092d45 100644
--- a/nixpkgs/nixos/modules/services/continuous-integration/buildbot/master.nix
+++ b/nixpkgs/nixos/modules/services/continuous-integration/buildbot/master.nix
@@ -222,7 +222,7 @@ in {
   };
 
   config = mkIf cfg.enable {
-    users.groups = optional (cfg.group == "buildbot") {
+    users.groups = optionalAttrs (cfg.group == "buildbot") {
       buildbot = { };
     };