diff --git a/nixos/modules/services/continuous-integration/buildbot/master.nix b/nixos/modules/services/continuous-integration/buildbot/master.nix
index b4cad5ee23c14..3e8fe6d921f85 100644
--- a/nixos/modules/services/continuous-integration/buildbot/master.nix
+++ b/nixos/modules/services/continuous-integration/buildbot/master.nix
@@ -5,7 +5,7 @@ let
   opt = options.services.buildbot-master;
 
   package = cfg.package.python.pkgs.toPythonModule cfg.package;
-  python = package.pythonModule;
+  python = cfg.package.python;
 
   escapeStr = lib.escape [ "'" ];